dusty

例句：

1. 1. The floor is very dusty after the rain.
   雨后地板非常脏。
2. 2. He found a dirty old book in the attic.
   他在阁楼里发现了一本旧书。
3. 3. The room was so dusty that we had to open all the windows.
   房间太脏了，我们不得不打开所有的窗户。