用不着

You don't need braces if you're wearing a belt!

要系腰带, 就用吊带了。

I have decided what to do, please do not give me any hassle about it.

我已经决定怎么做, 你用跟我唠叨。

I don’t have to give you any reasons. You can’t have a motorbike, full stop.

我用给你任何理由。你能有摩托车，件事到此。

This fact is too evident to require proof.

事实很明显, 用证明。

You needn’t feel any guilt about me.

你用我而內疚。

We needn't hurry with our meeting.

我们用匆忙开会。

It did not exactly beggar description, but it certainly had that word on the lookout for the mendicancy squad.

用多解释，其实比乞丐也好到哪里。

But the proles, if only they could somehow become conscious of their own strength, would have no need to conspire .

然而无产者，只消叫他们意识到自己的力量，就根本用什么地下活动。