🗣️ 情景例句
but I think I can be of some help to you.
但我觉得我可以对你略有帮助。
I am at leisure now.
我现在有空。
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。