臂状物

例句：

1. 1. She held herbaby close to her chest as she walked.
   她走路时把婴儿抱在怀里。
2. 2.The doctor examined his arm and found noinjuries.
   医生检查了他的手臂，没有发现任何伤害。
3. 3. Hestretched out his arm to waveat the passing car.
   他伸展手臂向驶过的汽车挥手。