I fear the senator has outlived his usefulness.

恐怕这位参议员已经老而无用了。

But guano might not have outlived its usefulness just yet.

但鸟粪并没有因此失去利用价值。

Many felt the nuisance of the machines outweighed their usefulness. BBC news.

很多人认为滑板车产的干扰大过它们的用处。BBC新闻。

We should, therefore, never overtrust the eye and underestimate the usefulness of the ear.

耳朵的活动范围虽然小，可是它的作用也不只是听听讲话，听听音乐。

As an institution, I think it's outlasted its usefulness by quite a large...margin.

作为一种制度，我觉得婚姻的必要性十分有限。

Embracing change also applies to uselessness and usefulness.

拥抱变化也适用于无用性和有用性。

His usefulness might not last forever.

他的利用价值不持续下去。

The question of GDP and its usefulness has annoyed policymakers for over half a century.

国内产总值的问题及其作用已经困扰决策者半个多世纪了。

Now I'm afraid your usefulness has come to an end.

你别想再骗我们了。

But despite their usefulness, predator-foiling eyespots don't occur naturally in mammals.

尽管眼斑很有用，但阻止捕食者的眼斑并不在哺乳动物身上自然出现。

But even in such instances, their usefulness can easily be overstated.

但即使在这种情况下，情绪数据的用处也很容易被夸大。

Usefulness and uselessness are relative and are not to be treated with rigidity.

有用和无用是相对的，不能僵化对待。

The World Health Organization has cast out on the usefulness of anti-body tests for the virus.

世卫组织（WHO）否认了新冠病毒抗体测试的可用性。

They've said they're successful because of their usefulness and popularity, not because they're trying to monopolize their industry.

它们称自己的成功是因为自己的产品有用且受欢迎，而不是因为它们试图垄断行业。

So if the president throws cold water on the usefulness of testing, what kind of message does that send?

如果总统对检测的有用性拨冷水，那传递出哪种信息？

However, there’s still some confusion about the usefulness of electric cars, they have a limited range in the recharging.

然而，电动汽车的用途仍然存在一些混乱。他们的充电范围有限。

What's it's actually getting at is the usefulness of letting the initial act of creation be free of scrutiny and restraint.

它真正想要表达的是让人们最初的创造不受审查和约束。

Second, the ruler's usefulness depends on its design.

其次，尺子的用处取决于它的设计。

Doesn't it have a power that could convey some usefulness?

难道它没有一种可以传达一些有用的力量吗？

And then, they have to have usefulness.

然后，它们必须有用处。