n.  手臂；上肢

n. （复数）武器

n.  〔椅子、沙发等的〕靠手，扶手

v.  以武器装备，武装

v.  提供；配备，装备 ≈ equip

• armament  

  n.  军备，武器

  n.  武装，备战（行动）

• cross/fold your arms  交叉双臂

• nuclear arms  核武器

• under arms  在备战状态中

• the arms trade  军火交易

• the armaments industry  军火工业

• be up in arms  愤怒；强烈反对

• with open arms  热烈地，欣然

• sb would give their right arm to do sth 

  某人为了做某事而不惜任何代价

• keep/hold sb at arm’s length 

  与某人保持距离

• If they detect something wrong while the system is armed, they'll transmit a wireless alert signal to a base station that will then raise the alarm. 装配该系统后

• “It's become an arms race, an educational arms race,” she said. 军备竞赛

• He folded his arms and leaned back in his chair. 他双臂交叉，仰靠在椅背上。

• He appealed for the rebels to lay down their arms. 他呼吁叛乱分子放下武器。

• All available forces are under arms.

  所有兵种都严阵以待。

• I’d give my right arm to be 21 again.

  要是让我回到21岁，拿什么换都行。

• The local farmers have armed themselves with rifles and pistols.

  当地的农场主用步枪和手枪武装自己。

• Arm yourself with all the facts you need to argue your case.

  你要准备好证明你观点所需的全部论据。

BrE /ɑːm/

NAmE /ɑːrm/