gib arm of crane

例句：

1. 1. He lifted the heavy box with his strong legs.
   他用强壮的腿抬起了沉重的箱子。
2. 2. The old man was walking with a cane, showing that he had lost one of his legs.
   老人用拐杖走路，表明他失去了一条腿。
3. 3. The doctor examined her leg and found no fractures or injuries.
   医生检查了她的腿，没有发现骨折或受伤。