Last year, he applied to Harvard University for a scholarship and succeeded in passing a difficult examination.
去年,他向哈佛大学申请奖学金并通过了一个很难的考试。
and we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian role.
我们只要看一看蝙蝠回声定位这一极不寻常的发现,就可以探究一下声音在什么情况下有绝对的实用价值。