But Mister Mindon was proud to be rich enough to have a perfectly useless room in his house.

VOA: special.2010.05.29

If you just scramble a sentence, it's pretty useless because the recipients are never going to be able to reverse the process.

如果你只是加密一个句子，这是毫无用处的,因为收件人没法将这个句子,反加密出来。

哈佛公开课 - 计算机科学课程节选

I think that what it would lead to would be useless votes.

我认为强制投票会产生许多无用的选票。

对于义务投票制 - SpeakingMax英语口语达人

I think for the moment it should be plain to you that this is a good way of understanding what the difference between a useful preconception and a useless preconception brought to bear on an interpretative act might consist in.

我想大家现在都能够,从这个例子中明白,解读中有益先见,和无益先见,之间的区别了。

耶鲁公开课 - 文学理论导论课程节选

Therapy for free tends to be useless therapy.

免费的心理治疗往往没有什么效果。

耶鲁公开课 - 心理学导论课程节选

It's just so vague as to be useless.

只是这些观点都太过模糊，没什么用。

耶鲁公开课 - 心理学导论课程节选