Train arm
[机] 轮系臂
🧩 词语组成解析
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
where we had our meals ...
我们用餐的地方……
Many great writers were not appreciated fully while they were alive.
许多伟大的作家当他们活着时没有被充分重视。
Mr. Smith is in charge of this class.
史密斯老师负责该班。