1. A well devoid of water is useless.
   无水的井没有用途。
2. Never inflict useless pain on dumb animals.
   切勿给不会说话的动物施加无谓的痛苦。
3. They weeded out useless books from library.
   他们从图书室里淘汰无用的书。
4. This is a waste and useless tyre.
   这是个废弃无用的轮胎。
5. Our car was useless for want of petrol.
   由于缺少汽油, 我们的汽车派不上用场。
6. She judged it a useless attempt to advise him.
   她断定, 给他提建议是徒劳的。
7. This is a useless knife — the handle has broken!
   这是把没用的小刀，刀把坏了。
8. He made it a useless attempt to advise her.
   他认为试图劝她是无用的。
9. In view of the facts, it seems useless to continue.
   鉴于这些事实, 继续下去似乎是无益的。
10. It is useless spoiling the ship for a ha'p'orth of tar.
    【谚】吝惜半便士柏油而毁坏一只船(因小失大)。
11. Don't expend all your time on such a useless job.
    不要把时间消耗在这种无用的工作上。
12. A car is useless without gasolene.
    汽车没有汽油便无用。
13. Damn this useless typewriter!
    这台破打字机真该死！
14. He's a useless fellow.
    他是个没用的家伙。
15. He is useless at maths.
    他的数学不好。
16. He spoke calmly to them trying to pour oil on troubled waters but it was useless.
    他心平气和地与他们讲话, 试图使争吵平息, 但这却是徒劳的。
17. In 1912 Progressives also established the Society for the Prevention of Useless Giving (known as SPUG).
    1912年，“时代渐进改革者”还建立了“禁送无用礼品协会”（简称SPUG）。
18. Whether you are the most useless amateur or a top professional, the yips can get you.
    不管你是个业余人士还是专业的人员，YIPS一样能够影响到你。
19. Heavy weapons are useless in the houses, and the intensity of buildings is no blindage for battles.
    且房屋强度严重不足，无法作为战斗用掩体。
20. These synthetic progestins will compete with progesterone receptor binding sites and compete with progesterone rendering progesterone useless.
    这些合成的黄体素会与黄体素接收器竞争，并使黄体素无效。

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