train gross load

例句：

1. 1. The soldiers were trained to fight in the jungle.
   士兵们被训练在丛林中作战。
2. 2. She was trained as a nurse by her father.
   她的父亲把她训练成了一名护士。
3. 3. He trained his dog to do tricks for him.
   他训练他的狗做各种把戏给他看。