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
I ran into Stone at the supermarket this morning.
早上我在超级市场碰见世通了。
Why do you dislike the medicine so much?
为什么你如此不喜欢药？
since her parents had impressed upon her that it would be unforgivable to miss it and cause the friends with whom she was going to stay to make two journeys to meet her.
因为她的父母再三跟她说，如果误了这趟车，她的东道主朋友就得接她两趟，这是不应该的。