Learning software
[计] 学习软件
🧩 词语组成解析
🗣️ 情景例句
Last but not least,
最后但同等重要的一样，
Diligence is the mother of success.
勤奋是成功之母。
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。