但转念一想，这没什么用，他不识字。

Then I thought, 'That was no good. This man can't read.

youdao

不要说那种大而空的东西，像什么‘你的肢体语言很乏味，’这没什么用，最好是说，‘你的手臂可以多摆动点。’

Rather than saying, 'Your body is doing weird things,' it would be more helpful if they said, 'Open your arms more.'

youdao

如果你能制造一百吨这种药物，但每克的成本是十万美元，这药可能就没什么用，因为没人买得起它。

If you can make 100 tons of the drug, but it costs $100,000 a gram that might not be a useful drug because nobody could afford to use it.

youdao

Oh, I could cheat and make, OK the upper bound a half, but that wouldn't be very honest.

噢，我可以像作弊一样,把上界扩大两倍，但这看起来没什么用。

麻省理工公开课 - 计算机科学及编程导论课程节选

This was not sort of for the timid iPhone because you could very easily brick your iPhone.

对于胆小的人来说，这是没什么用的,因为这可能很容易损坏你的。

哈佛公开课 - 计算机科学课程节选

So if you can make 100 tons of the drug but it costs $100,000 a gram that might not be a useful drug because nobody could afford to use it.

虽然你能制造一百吨药,但每克药得十万美元,这药就没什么用,因为没人能用得起它

耶鲁公开课 - 生物医学工程探索课程节选