雅思單字字卡

Milk appeared to inhibit the antioxidant potential of the flavonoids, reducing their absorption into the bloodstream

牛奶似乎抑制了類黃酮的抗氧化潛力，減少了它們在血液中的吸收

Vinegar in a salad is an acid

沙拉中的醋是一種酸

Vitamin C is an acid

維生素C是一種酸

Salt is an alkali.

鹽是鹼。

Sodium is one of the alkali metals.

鈉是鹼金屬之一。

The water in a polluted lake is acidic

被污染的湖水是酸性的

Carbon dioxide is acidic.

二氧化碳是酸性的。

When an acid is dissolved in water we get an acidic solution.

當酸溶解在水中時，我們得到酸性溶液。

Water can become alkaline as it seeps through rocks, picking up minerals such as calcium and magnesium.

水滲入岩石時會變成鹼性，吸收鈣和鎂等礦物質。

Alkaline chemicals can be harmful to our bodies.

鹼性化學物質可能對我們的身體有害。

Acidity 是名詞。用來指物質具有酸性特徵，或形容某物有明顯的酸味。

The acidity of the lemon makes it perfect for cleaning stains.

檸檬的酸性能完美用來清潔污漬。

Too much acidity in the soil can harm plant growth.

土壤中的酸性過高可能會傷害植物生長。

Her comment had a tone of acidity that surprised everyone.

她的評論帶有酸溜溜的語氣，讓大家都感到驚訝。

In the second decade of the twenty-first century, alchemy is not only about the transmutation of metals, but the shift in consciousness that returns us from the physical to the non-physical.

在 21 世紀的第二個十年，煉金術不僅是關於金屬的嬗變，而且是意識的轉變，使我們從物質回歸到非物質。

Throughout its history, alchemy has shown a dual nature. On the one hand, it has involved the use of chemical substances and so is claimed by the history of science as the precursor of modern chemistry.

縱觀其歷史，煉金術表現出雙重性質。一方面，它涉及化學物質的使用，因此被科學史稱為現代化學的先驅。

Vinegar in a salad is an acid

沙拉中的醋是一種酸

Vitamin C is an acid

維生素C是一種酸

Salt is an alkali.

鹽是鹼。

Sodium is one of the alkali metals.

鈉是鹼金屬之一。

Water can become alkaline as it seeps through rocks, picking up minerals such as calcium and magnesium.

水滲入岩石時會變成鹼性，吸收鈣和鎂等礦物質。

Alkaline chemicals can be harmful to our bodies.

鹼性化學物質可能對我們的身體有害。

The pollution produced by carbon dioxide increases the acidity of the oceans and affects the marine food chain.

二氧化碳產生的污染增加了海洋的酸度，影響了海洋食物鏈。

We can decrease the alkalinity by adding more acidic chemicals.

我們可以通過添加更多的酸性化學物質來降低鹼度。

Officials said materials made of plastic, aluminum, glass and metals will have to be recycled.

官員們表示，由塑料、鋁、玻璃和金屬製成的材料必須回收利用。

Plants give out oxygen and animals expel carbon dioxide and methane.

植物釋放氧氣，動物排出二氧化碳和甲烷。

The reaction with carbonates gives the nitrate salt, water, and carbon dioxide. In natural water systems, many common minerals are formed by anion substitution-precipitation reactions, among them carbonates, phosphates, and the sulfate-containing rocks.

與碳酸鹽反應生成硝酸鹽、水和二氧化碳。在天然水系統中，許多常見的礦物質是通過陰離子置換-沉澱反應形成的，其中包括碳酸鹽、磷酸鹽和含硫酸鹽的岩石。

Chlorine acts as a catalyst promoting the breakdown of ozone

氯作為促進臭氧分解的催化劑

The air smelled like a compound of diesel and petrol fumes. The layers of plants and animals slowly broke down into simple substances called hydrocarbons, compounds of hydrogen and carbon.

空氣聞起來像柴油和汽油的混合物。植物和動物的層層慢慢分解成稱為碳氫化合物的簡單物質，即氫和碳的化合物。

The cooler temperatures cause the gas to condense into a liquid.​

較低的溫度會導致氣體冷凝成液體。

The steam from the shower condenses quickly when it hits the cool window.

淋浴間的蒸汽碰到涼爽的窗戶時會迅速凝結。

This is because the iron electrode is more susceptible to corrosion and to self-discharge on standing.

這是因為鐵電極更容易腐蝕和站立時自放電。

Sugar dissolves in water.

糖溶於水。

Unlike brittle elements such as sulfur, metal is highly ductile.

與硫等脆性元素不同，金屬具有很高的延展性。

The warmer temperatures cause the liquid to evaporate into a gas.​

較高的溫度會導致液體蒸發成氣體。

Water evaporates rapidly in hot weather.

在炎熱的天氣裡，水會迅速蒸發。

In the early 19th century, other methods of cooling were explored, and several evaporative refrigerators were patented, although it was another half-century before they made an impact on the food industry.

在 19 世紀初，人們探索了其他冷卻方法，並獲得了幾款蒸發式冰箱的專利，儘管它們對食品工業產生影響還需要半個世紀。

Kerosene is volatile, flammable and leaks very easily from containers.

煤油易揮發、易燃並且很容易從容器中洩漏。

gaseous emissions from motor vehicles.

機動車輛的氣體排放物。

The plans, which will be carried out over a 20 year horizon, will include energy recovery techniques such as incineration and gasification

該計劃將在 20 年內實施，包括焚燒和氣化等能源回收技術

Coal, too, could be made carbon-free, using advanced power plants that gasify the fuel and then generate power while stripping away the carbon for sequestration underground.

煤炭也可以無碳化，使用先進的發電廠，將燃料氣化，然後發電，同時剝離碳以封存地下。

We know that the Moon is low on certain chemicals such as hydrogen and carbon

我們知道月球缺乏某些化學物質，如氫和碳

The impurities dissolve in lead and evaporate leaving behind silver and gold. Aluminium and lead are impurities frequently found in tap water.

雜質溶解在鉛中並蒸發，留下銀和金。鋁和鉛是自來水中常見的雜質。

Silver is the most malleable of all metals.

銀是所有金屬中最具延展性的。

Trace gases include methane, nitrous oxide, carbon monoxide, sulphur dioxide, and ozone

痕量氣體包括甲烷、一氧化二氮、一氧化碳、二氧化硫和臭氧

Fire is actually a dancing plasma of molecules and molecular fragments, excited into a glowing state by heat.

火實際上是分子和分子碎片的跳舞等離子體，被熱激發成發光狀態。

A sodium ion was introduced into the system to reach overall electrical neutrality.

將鈉離子引入系統以達到整體電中性。

Baking soda, a gentle alkaline powder, neutralizes odor-causing acids by restoring your skin's natural pH level.

小蘇打是一種溫和的鹼性粉末，可通過恢復皮膚的自然 pH 值來中和引起異味的酸。

The data demonstrate that nitrogen and phosphorus are in especially short supply.

數據表明，氮和磷的供應尤其短缺。

During that time, the officer had smelled the odour of alcohol on the accused's breath.

在那段時間，警官聞到了被告呼吸中的酒味。

When you move down the periodic table, as the atomic numbers increase, the elements become rarer

當你向下移動元素週期表時，隨著原子序數的增加，元素變得越來越稀有

Scientists explore the origins of energy in chemical reactions using experimental quantum chemistry.

科學家們使用實驗量子化學探索化學反應中能量的起源。

Reactions in solids tend to be much more complex than those in liquids, where molecules quickly diffuse into a uniform mixture.

固體中的反應往往比液體中的反應複雜得多，液體中的分子迅速擴散成均勻的混合物。

Sugar was refined by boiling it in huge iron vats.

糖是通過在巨大的鐵桶中煮沸來提煉的。

When oil is refined this reaction is used to remove unwanted alkenes.

當油精煉時，該反應用於去除不需要的烯烴。

The soil is saturated

土壤飽和了

One characteristic of sugar is its solubility in water.

糖的一個特徵是它在水中的溶解度。

Salt is soluble in water = Salt can dissolve in water.

鹽溶於水=鹽可以溶於水。

Sand is insoluble in water = Sand cannot dissolve in water

沙子不溶於水=沙子不溶於水

Ice can sublimate at temperatures below freezing.

冰可以在零度以下的溫度昇華。

During sublimation, solids are transformed directly to vapor without passing through a liquid stage.

在昇華過程中，固體直接轉化為蒸氣，而無需通過液相。

Ice can sublimate at temperatures below freezing.

冰可以在零度以下的溫度昇華。

During sublimation, solids are transformed directly to vapor without passing through a liquid stage.

在昇華過程中，固體直接轉化為蒸氣，而無需通過液相。

When fossil fuels burn, carbon dioxide, sulfur dioxide, nitrogen oxides, sooty particles, dioxins, and other pollutants are released into the air and water.

當化石燃料燃燒時，二氧化碳、二氧化硫、氮氧化物、煤煙顆粒、二噁英和其他污染物會釋放到空氣和水中。

the sulphuric by-products of wood fires.

木火產生的硫酸副產品。

Blacks and other minorities have higher concentrations of melanin, which makes their skin darker, but this inhibits synthesis of vitamin D, the researchers explained.

研究人員解釋說，黑人和其他少數族裔的黑色素濃度較高，這使他們的皮膚更黑，但這會抑制維生素 D 的合成。

Now, biologists know that RNAs serve many other essential functions: they help with protein synthesis, control gene activity and modify other RNAs.

現在，生物學家知道 RNA 還具有許多其他基本功能：它們有助於蛋白質合成、控制基因活性和修飾其他 RNA。

Mixtures of several synthetic dyes, or mixtures of natural and synthetic dyes, could produce more subdued colors.

幾種合成染料的混合物，或天然和合成染料的混合物，可以產生更柔和的顏色。

It is not certain if the effects are due to the chemical or the radioactive properties of uranium.

不確定這些影響是由於鈾的化學性質還是放射性性質造成的。

Boiling water vaporizes and rises into the atmosphere.

沸騰的水蒸發並上升到大氣中。

Heat is used to vaporize a liquid.

熱量用於蒸發液體。

Even small amounts of gasoline or other volatile fuels or solvents mixed with kerosene can substantially increase the risk of a fire or an explosion.

即使是少量的汽油或其他揮發性燃料或與煤油混合的溶劑也會大大增加火災或爆炸的風險。