1.I fear the senator has outlived his usefulness.

恐怕这位参议员已经老而无用了。

2.But guano might not have outlived its usefulness just yet.

但鸟粪并没有因此失去利用价值。

3.A look at the " biotechnology" of the horse explains its usefulness.

看一看马的“生物技术”就能解释马的用处。

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

很多人认为滑板车产生的干扰大过它们的用处。BBC新闻。

5.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。

6.Embracing change also applies to uselessness and usefulness.

拥抱变化也适用于无用性和有用性。

7.His usefulness might not last forever.

他的利用价值不会永远持续下去。

8.But the complexity of AI can also limit its usefulness in forensic linguistics.

然而，人工智能的复杂性也会限制其在法律语言学领域的作用。

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

国内生产总值的问题及其作用已经困扰决策者半个多世纪了。

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

你别想再骗我们了。

11.In other words, the results of its usefulness are still not known.

换句话说，其有用性的结果仍然未知。

12.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会在哺乳动物身上自然出现。

13.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。

14.Different kinds of wood have different grains, which affect their appearance, strength, and usefulness.

不同种类的木材有不同的纹理，这会影响木材的外观、强度和有用性。

15.They focus on personalized aspects and emotional perception in addition to the usefulness of things.

除了事物的有用性之外，他们还关注个性化方面和情感感知。

16.As you're (ideally) not consuming cleaning products, their decreased usefulness is a little more abstract.

由于清洁产品（理想情况下）并不会被直接食用，它们效力的降低就显得不那么直观。

17.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。

18.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的可用性。

19.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，而不是因为它们图垄断行业。

20.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，那会传递出哪种信息？