As technology and society permit highly effective and generally acceptable methods of family planning there has been a decline in family size.

由于技术和社会允许采用高度有效和普遍可接受的计划生育方法，因此家庭规模有所减少。

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As an economical and effective method, the expressway noise barrier is a primary measure to reduce traffic noise.

高速公路隔声屏障作为一种经济有效的方法，是降低交通噪声的主要措施。

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In America as elsewhere, few instruments of foreign policy are as effective in promoting peace and stability as welcoming international university students.

在美国，如同在其他地方一样，在促进和平与稳定方面，几乎没有外交手段比接纳国际学生来得更有效。

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Life expectancy rates climbed, because doctors and scientists developed effective ways to prevent or treat diseases such as tuberculosis, typhoid,diphtheria,and influenza.

VOA: special.2010.12.02

I don't know. Does anybody--It has been-- The colleague answered and said that it's not as effective as other methods.

我不是很清楚,有同事回答说,这种方法并不如其他方法有效

耶鲁公开课 - 心理学导论课程节选

And we know as we go across a row in the periodic table, what's happening is that z effective or the effective pull on the nucleus is increasing.

而我们知道沿着周期表的某一行向右看，有效核电量,或者说原子核的有效引力是在逐渐增大的。

麻省理工公开课 - 化学原理课程节选

"In my personal opinion there is very little room, if any, for metal-on-metal implants because the alternatives we have on the market are likely safer and as effective, " said Dr. Art Sedrakyan, professor of public health at Weill Cornell Medical College in New York.

MSN: FDA probes safety issues with metal hip replacements

Tests in mice and guinea pigs have shown that such vaccine microspheres are as safe and effective as conventional shots.

ECONOMIST: Vaccines

We know that we need to ensure that our moderation processes and communications with schools are as effective and transparent as they can be.

BBC: Heads doubt Ofqual's claims on GCSE English