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
You have to cook dinner for the entire family.
你今晚得替全家做晚餐呢。
First come, first served.
先来先卖。
Several girls stopped and looked in one of the glass-topped tables.
几个女同学停下来仔细看看陈列在一张带玻璃罩的桌子里的东西。