wash gun

例句：

1. 1. The soldier was washing his gunin the river.
   士兵在河里洗他的枪。
2. 2. The policeman washed his gun aftera long day's work.
   警察在工作了一整天后洗了他的枪。
3. 3. The soldierswere washing their guns before they went towar.
   士兵们在去打仗前洗他们的枪。