2) There is no need for sb to do sth.\\ for sth.(某人没有必要做……) 例如:There is no need for you to bring more food. 不需你拿来更多的食物了。 3) By +doing…,主语+can …. (借着……,……能够……) ...
21. So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.? 所以在未来的数百万年中,生命能否在地球上延续取决于这个问题能否得到解决。?
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