Compound lever
复式杠杆; 复杆
🧩 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 had better study hard.
你最好努力学习。
If he doesn't accompany him, I will.
如果他不，我将陪伴他。
His great flight lasted thirty-seven minutes.
他这次伟大的飞行持续37分钟。