🧩 词语组成解析
[化] 毒扁豆
🗣️ 情景例句
He's going up the ladder pretty quickly.
他真是平步青云。
He will be here in 30 minutes.
他在三十分钟内会到这里。
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。