bottom brush

• 洗瓶底的刷子

bottom brush的用法和样例：

例句

1. The dregs have settled at the bottom of the bottle.
   渣滓都沉到瓶底了。
2. It was standing in the graveyard, in the grass, its bottom missing.
   站在墓地的青草上面去了，而且瓶底已经丢失，虽然丢失了也就让它空空地站在墓边。