Say no to drugs?

向药品说不？

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Researchers say no drugs have been clinically proven to prevent lung cancer among those at risk, but several are under investigation.

研究人员说一直没有药物被证实能预防高危人群发生肺癌，但有几种药物正在研究之中。

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Say no... to smoking and drugs!

拒绝…吸烟和品！

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"Just say,'No,' is the right advice to give your teenagers about drugs,"

VOA: standard.2009.03.17

Internet addicts are treated in boot camp rehab programs and school children learn about safe internet practices, in the way American students learn to say no to drugs.

FORBES: Hello World, Goodbye Society?