dust sb.'s jacket

例句：

1. 1. She dusted off her old clothes and put them on.
   她把旧衣服掸干净穿上了。
2. 2. The dirt on the ground made it difficult to walk.
   地上的泥土使走路变得困难。
3. 3. The boy was so dirty that he needed a shower.
   那个男孩太脏了，需要洗澡。