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
Thank you very much. So we can put our minds at ease.
非常感谢，这样我们就放心了。
Not only did he make a promise, but he also kept it.
他不仅许下诺言，而且遵守了。
Everybody on board was worried and we were curious to find out what had happened.
飞机上的人都很着急，大家都急于想知道究竟出了什么事。