The time has come when we can make use of solar energy directly.
人们能直接利用太阳能的时代已经到来。
Scientists are trying to make direct use of solar energy on a large scale .
科学家们正试图大规模地直接利用太阳能。
We are supposed to make full use of solar energy.
我们应该充分利用太阳能。
The day will come when man can make full use of solar energy.
人类能够充分利用太阳能的那一天将会到来。
The day will come when man can make full use of solar energy.
人类能够充分利用太阳能的那一天将会到来。
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