A well devoid of water is useless.
水
井没有
途。
, 价值, 
, 不怎么样价值, 没有处;意义;意义;;,不相关;;;;, 多余;;;A well devoid of water is useless.
水井没有途。
They weeded out useless books from library.
他们从图书室里淘汰书。
Never inflict useless pain on dumb animals.
切勿给不会说话
物施加谓痛苦。
This is a waste and useless tyre.
这是个废弃轮胎。
Our car was useless for want of petrol.
由于缺少汽油, 我们汽车派不上场。
She judged it a useless attempt to advise him.
她断定, 给他提建议是徒劳。
This is a useless knife — the handle has broken!
这是把没
刀，刀把坏了。
He made it a useless attempt to advise her.
他认为试图劝她是。
In view of the facts, it seems useless to continue.
鉴于这些事实, 继续下去似乎是益。
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(因失大)。
Don't expend all your time on such a useless job.
不要把时间消耗在这种工作上。
A car is useless without gasolene.
汽车没有汽油便。
Damn this useless typewriter!
这台破打字机真该死！
He is useless at maths.
他数学不好。
He's a useless fellow.
他是个没家伙。
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人员，YIPS一样能够影响到你。
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。
These synthetic progestins will compete with progesterone receptor binding sites and compete with progesterone rendering progesterone useless.
这些合成黄体素会与黄体素接收器竞争，并使黄体素
。
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，法作为战斗掩体。
From raw material,ACF was prepared with H2O and CO2 as the activating agent through old and useless organic cellosilk.
以CO2和H2O作为活化剂,利废旧有机纤维来制备活性炭纤维,对制备活性炭纤维性能进行研究。
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