Some doctors say that masks can stop the virus as much as 80%, but if you don't wash your hands often, it's no use wearing a mask.

医生称，口罩可以阻挡高达80%的病毒，但如果不勤洗手，戴口罩也没有用。

youdao

Why it's an essence that so often spoils, no one can say.

而为什么如此本质又经常被糟蹋，没人能说明白。

youdao

Colleges often say no to those who donate solely for commercial publicity, as it may affect the independence and traditions of the college.

大学经常对那些只是出于商业宣传目的而进行捐赠的人予以拒绝，因为这可能影响大学的独立性和传统。

youdao

Yet researchers from Stanford University say new treatments are often no better than existing ones, but are almost always more costly.

VOA: special.2009.08.14

Now, I know if you talk to some of these people, they'll often say, " "Oh, no, no, no. The views are so glorious," or something like that.

现在，我知道如果你和这些人中的一些人谈话，他们常常会说，“哦，不，不，不，那些景色是那么迷人“,或者类似的话。

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They say he often felt he had no control over his life.

VOA: special.2009.11.22

Say NO as often as possible and hold others in high esteem for doing so.

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They say no and often regret it for the rest of their lives.

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And even then, say critics, often no money is forthcoming.

CNN: Quake Politics