Submitted by admin on Mon, 04/21/2014 - 22:42
definition:
(Of a natural resource or source of energy) not depleted when used
sentence:
If you're willing to put solar panels on your roof or a hybrid car in your driveway, you may be eligible for tax incentives and rebates on renewable sources of energy and related technologies.
There's no doubt that wind and solar are clean, efficient and renewable sources of energy.v
difficulty:
medium
toefl frequency:
2
toefl classification:
adverb:
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