🧩 词语组成解析
peak
[pi:k]
n. 山峰;最高点;尖端;帽舌;
vi. 达到高峰，达到最大值;消瘦;变憔悴;
adj. 最高的;最大值的;
🗣️ 情景例句
Are there any parties going on tonight?
今晚有聚会吗？
Yay, a hole in one!
嘿！一杆进洞！
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。