1.There was little hope of continuing my inquiries after dark to any useful purpose in a neighborhood that was strange to me.
这一带我不熟悉，天黑以后继续进行调查，取得结果的希望不大。
2.Such a program had perhaps served a useful purpose at one time, but it was now the chief intellectual stumbling block.
这样一个纲领，也许一度起过积极作用，但现在它是使知识界踌躇不前的主要障碍。
3.The court found that "the destruction of four healthy animals for no useful purpose should not be upheld" and the horses were spared.
法庭认为“射杀四匹健康的马毫无意义，应予以否决。”这些马也因此而留了下来。
4.We have not yet dealt with one important question about NEPA, the question of whether NEPA has served a useful purpose.
我们还没有讨论《国家环境政策法》中一个重要的问题，即《国家环境政策法》是否有用。
5.Very well, keep it. But I warn you that I could at any time see to it that your key served no useful purpose.
那么您就拿去吧，但是我要告诉您，我可以让这把钥匙对您毫无用处。
6.This will probably disappear from the body altogether in course of time because it does not serve a useful purpose any longer.
这将可能从身体消失在时间的过程，因为它没有完全发挥作用，而不再。
7.The term 'useful' in this context refers to the condition that the subject matter has a useful purpose and also includes operativeness .
至于「有用」一词，是指标的物必须有某种有用的用途，该词亦包括该标的物的效用。
8.Just to be clear: financial speculation can serve a useful purpose.
有一点要说明的：金融投机的目的也可以是有用的。
9.A recession could serve a useful purpose in shaking out the underperforming businesses.
经济衰退可能会起到有益的作用摇出不佳的企业。
10.As one grows old, one generally rids himself of his short-comings because they no longer serve any useful purpose.
人们老了时，一般都克服了自己的缺点，因为他们再也不为任何企图而努力。