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

我用不给你任何理由。你不能有摩托车，件事到此止。

You needn’t feel any guilt about me.

你用不我而內疚。

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

要系腰带, 就用不吊带了。

This fact is too evident to require proof.

事很明显, 用不证明。

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

我已决定怎么做, 你用不跟我唠叨。

We needn't hurry with our meeting.

我们用不匆忙开会。

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

用不多解释，比乞丐也好不到哪里。

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，就根本用不什么地下活动。