1.
To waste (time or money) on unimportant things.
浪费(时间,金钱)在一些无用的事情.
2.
sit around, often unused.
无所事事，通常不用。
3.
Would he argue with useless words, with speeches that have no value?
他岂可用无益的话、无济于事的言语理论呢。
4.
"Will he make arguments with words in which is no profit, and with sayings which have no value?"
他岂可用无益的话，和无济于事的言语，理论呢?
5.
Should he reason with unprofitable talk? or with speeches wherewith he can do no good?
3他岂可用无益的话，和无济于事的言语，理论呢。
6.
"It is no use doing what you like, you have got to like what you do. "
做喜欢做的事是无用的,你得喜欢你所做的事情。
7.
An idle, irresponsible person.
无用的人不做事的人，不负责的人
8.
In the ancient times, it was a thing that was both mystifying beyond comparison and containing endless functions and benefits.
古时候这可是件神圣无比且功用无穷的事情。
9.
To talk or act in a feeble or futile way.
说废话；做无聊的事以无用的或徒劳的方式说话或做事
10.
There's nothing paradoxical about that: the mobilization of resources was immense.
大量资源的动用是个无可争论的事实。
11.
Quoting facts and figures quickly drove him into a corner.
引用的事实和数据很快使他无言以对。
12.
The accident has rendered the machine useless.
这不测的事使这机器成为无用。
13.
Do a job on
严重损坏；对……做有害的事；使……变丑或无用
14.
Quoted facts and figures quickly drove him into a corner
引用的事实和数据很快使他无话可说。
15.
To engage in idle or frivolous activity.
干蠢事涉及无用或琐碎的行动
16.
used withhavei+ a past participle to indicate that actions in the past were or may have been unnecessary
过去分词连用，表示曾做的事无必要
17.
Analysis And Application Of Liabilities Without Fault For Vehicle Accidents;
机动车事故无过错责任的探析与适用
18.
Wireless Mesh Network Technology Applies in Military Communications
无线Mesh网络技术在军事通信中的应用