没用的

• trashy
• napoo
• of no utility
• useless
• helpless

例句

1. 我们不可能改变他，故而必须尽量处理好。覆水难收，后悔是没用的。
   But we can't change him, so we must make the best of it. What's done cannot be undone, on use crying over spilt milk.
2. 这些抽屉里净是没用的东西，我得好好清理一下了。
   These drawers are full of rubbish; it's time I had a good turn-out.
3. 你简直是个没用的懒蛋！
   You lousy bum!
4. 我认为读书不求甚解是没用的。
   I think it useless read without under stand.