Machines need not have a dulling effect.

但机器不一定会产生令人迟钝的效果。

" I need not have brought you any" .

" 我一个人也不该给你。"

The odd thing was, he needn't have bothered.

奇怪的是，有这样的出身，他本不该如此啊。

Funny, really, he needn't have bothered.

真是可笑其实他犯不着费这番心思。

In truth, he needn't have worried.

事实上，他不必担心。

But actually, I needn't have worried, because I'm going to show you now the work that they did.

但是实际上，我没有必要担心，因为我将要向你们展示他们做的。

" I needn't have learned about the 1637 Werewolf Code of Conduct or the uprising of Elfric the Eager."

“我其实不需要去记‘一六三七年的狼人行为准则’，以及小精灵叛乱的经过。”

The accident at Kinross need never have occurred, and the one hundred and seventy-seven men need not have died.

金罗斯的事故本不必发生，那177位工友本来可以好好活着。

The crime need not have been premeditated.

犯罪不必是有预谋的。

" You needn't have done that, " I smiled.

“你不必那样做， ” 我笑着说。

" Oh, you needn't have any doubt of that" !

“哦，你不必怀疑这一点”！

I need not have been afraid of disclaiming the compliment.

我不必害怕拒绝赞美。

I need not have invited him, and then nothing would have happened.

我不必邀请他， 那样就什么事也没有了。

Has Mr Matthew complained? He needn't have to.

是马修先生抱怨了吗？用不着他抱怨。

Excellent point. I needn't have crossed the pond.

说得好 我不用飞跃大西洋了。

You needn't have come to tell me that.

你不必专程跑来告诉我。

You needn’t have spent all that money.

【need】你本可以不花那么多钱的。

You had a gun in your pocket, but I needn't have seen it.

你口袋里有把枪， 但我不需要看到它。

But you needn't have come back.

但你不必回来了。

The cancer almost certainly arose as a result of chronic overexposure to X-rays through her work and needn't have happened.

她得这种癌症几乎肯定是由于在工作时长期接触X光射线所致，这本来是可以避免的。