Machine units
[电] 机器单位
🧩 词语组成解析
n. 单位
🗣️ 情景例句
The book impressed a lot of people.
那本书在很多人心中留下深刻印象。
To play hopscotch
玩跳房子
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。