Vibrating arm
[机] 振动杆
🧩 词语组成解析
[电] 振动; 振动的
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
Good-bye, Susan.
再见， Susan。
He that would have eggs must endure the cackling of hens.
欲图逸，得先劳。
Were you in San Francisco at the time of the big earthquake in 1989?
1989年旧金山大地震时，你在那儿吗？