pair of arms

例句：

1. 1. He heldthe door open with his pair of arms.
   他用双臂把门打开。
2. 2. Shehad to lift the heavybox with her pair of arms.
   她不得不用双臂举起那个沉重的箱子。
3. 3. The couple walked hand in hand,holding each other's pair of arms.
   这对情侣手牵手走着，互相握着对方的手臂。