False beliefs can be useful in a social sense even if they are not useful in a factual sense.

错误的信念虽然在事实意义上没有用，但从社会意义的角度来讲是有用的。

youdao

Many critics claim that some subjects taught in educational centres are just wasting time and are not useful to the student.

许多评论家声称，在教育中心教授的一些课程只是在浪费时间，对学生毫无用处。

youdao

So timing is not useful anymore.

计时不再有用了。

youdao

Babe was very useful. For example, Paul had trouble removing trees along a road that was not straight.

VOA: special.2009.01.24

He maintains further the titles of nobility are of value only for the benefits they confer on those of lesser rank or they're not useful at all.

对于贵族头衔,他认为只有在依据头衔划分利益时,它才具有真实的价值,否则再高的头衔也是一无是处。

耶鲁公开课 - 政治哲学导论课程节选

that you know it's not going to happen or you know it's not useful to do.

你知道这事没发生的可能，或者这么做并不会起到什么作用。

The thing is 课堂 - SpeakingMax英语口语达人

Cholinesterase inhibitors are not useful in dementia caused by Huntington's disease or traumatic brain injury.

CNN: Better understanding of dementia leading to more effective therapies

They are not useful in discussing the distribution of total income over this time period.

FORBES: Is US Economic Growth Now Finished?

And almost two-thirds described a tick-box approach to measuring progress as "unhelpful" or "not useful at all".

BBC: New curriculum workload 'too high', EIS union survey warns