Coal’s future depends on our ability to make it cleaner and more efficient.
煤炭的未来取决于我们能否使其更清洁、更高效。
The law, in its majestic equality, forbids the rich as well as the poor to sleep under bridges, to beg in the streets, and to steal bread.
写文章的方法，必须先确立大的方面，然后才能顾及小的细节。
你不需要完美的声音来打动人们；你只需要用心歌唱。
反过来，始终反过来：把情况或问题颠倒过来，从反面看。