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
and 83 is to the right, about two houses. 83
号是在右边 大约过两栋房子就到了。
I ought to write a letter.
我应该写一封信。
Because of this, he has not been able to get his own car into his garage even once.
为此，他甚至一次也没能把自己的车开进车库。