电视是一种有效的通信手段。

Television is an effective means of communication.

《牛津词典》

避孕套如果谨慎使用，是一种有效的节育方法。

Condoms are an effective method of birth control if used with care.

《柯林斯英汉双解大词典》

这是一种有效的灭菌方法，确实把细菌都杀光了。

It is an effective treatment for the bacteria and does kill it off.

《柯林斯英汉双解大词典》

It happens to be better suited for manipulating strings than numbers, for example, but it's really a general-purpose language.

例如它恰好,处理字符串,比处理数字更有效率，但是它确实是一种面向面很广的语言。

麻省理工公开课 - 计算机科学及编程导论课程节选

We think that anticipation is a powerful evoker of desire, and we think that brain activation can reflect that.

我们认为,预期是有关欲望的一种有效观测手段，同时我们认为，大脑活动能够将其反映出来。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

But actually, hazing is illegal but a remarkably successful tool.

实际上，捉弄他人是违法的,但它却是非常有效的一种手段。

耶鲁公开课 - 心理学导论课程节选