🧩 词语组成解析
wrack
[[ræk]]
n. 漂积海草, 失事船只, 破坏\\nvt. 严重伤害
🗣️ 情景例句
Don't forget to write.
别忘了给我写信。
Never neglect an opportunity for improvement.
抓住大好时机，切莫等闲错过。
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。