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Vaccination is by now a simple, safe and effective way to protect us from the diseases.

到目前为止，接种疫苗是一种简单、安全并有效的方式，可以保护我们免受疾病侵害。

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Look for a safe and effective weight-loss program.

寻找安全有效的减肥计划。

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"It is impossible to maintain a safe and effective health-care system under conditions of siege that have been in place now since June 2007."

VOA: standard.2010.06.01

And so they're already very safe, very effective vaccines available for many infectious diseases.

所以这些疫苗非常安全有效,常备用来对付各种传染病

耶鲁公开课 - 生物医学工程探索课程节选

"What we assure is that the technologies that do come on the market are safe and effective, but whether or not they should be used on a given case,a given patient, is a decision that is made by the individual practitioner."

VOA: standard.2010.04.07

The TSA maintained that the backscatter machines, manufactured by Rapiscan Systems, were safe and effective.

CNN: TSA removes body scanners criticized as too revealing

They assume doctors have made all the right clinical decisions for safe and effective care.

FORBES: Patients Need More Options for Self-Managing Their Own Healthcare

Every train must have a driver to ensure the safe and effective running of the Underground.

BBC: Strike ballot over tests for driverless Tube trains