delicate

definition: 
needing careful treatment; sensitive
sentence: 
Proposals to drill for oil have also triggered concerns about threats to the region’s delicate ecology.
difficulty: 
very easy
toefl frequency: 
2
toefl classification: 
adverb: 
delicately
adjective: 
delicate
adverb sentence: 
Surgeons then delicately reconnected arteries, veins, muscles, tendons and nerves.
adjective sentence: 
From spring’s delicate first buds to lush late-summer gardens, green is a symbol not just of life, but of life that is thriving.