Effecive lever arm
[机] 有效杆臂
🧩 词语组成解析
lever
['li:və, 'levə]
n. 杠杆;操作杆;工具;
vt. 用杠杆撬动;
arm
[ɑrm]
n. 臂;武器;[复数]战事;权力;
vi. 准备（斗争），准备行动（against）;
vt. 装备（防御工事）;准备（攻击或迎击）;配备;防护;
🗣️ 情景例句
Do you have a dry white wine?
你这里有涩白酒吗？
How much does it cost to rent a mid-size car?
租一辆中型汽车要多少钱？
During the day, sleep comes in snatches.
白天是忽睡忽醒，