Lever principle
[化] 杠杆原理
🧩 词语组成解析
lever
['li:və, 'levə]
n. 杠杆;操作杆;工具;
vt. 用杠杆撬动;
🗣️ 情景例句
Is your wife ill?
是你太太病了吗？
The cow that's first up gets the first of the dew.
早起母牛先得露。
Yes! They're having a good time.
是呀！他们玩得很痛快。