dirty

adj. 下流的，卑鄙的；肮脏的；恶劣的；暗淡的

vt. 弄脏

vi. 变脏

英文词源

dirty (adj.): c. 1500, from dirt + -y (2). Earlier dritty (late 14c.). Meaning "smutty, morally unclean" is from 1590s. Of colors, from 1690s. Dirty linen "personal or familial secrets" is first recorded 1860s. Dirty work in the figurative sense is from 1764; dirty trick is from 1670s. The dirty look someone gives you is from 1928; dirty old man "superannuated lecher" is from 1932. Related: dirtiness.
dirty (v.): 1590s, from dirty (adj.). Related: Dirtied; dirtying.

3. They chased down the stairs into the narrow, dirty street.: 他们冲下楼梯，来到狭窄、肮脏的街上。

4. Before entering the bathroom, he emptied his dirty laundry into the hamper.: 进浴室前，他把脏衣服全都放进洗衣筐里。

5. The dogs are always rubbing against the wall and making dirty marks.: 那些狗老是往墙上蹭，留下了斑斑污迹。