Prevent the flu and colds by smiling.

微笑可以预防流感和伤风。

youdao

Now, you know how to prevent the flu? If you have any good advice, would you please let us know.

现在，你知道怎样预防流感了吗?如果你有什么好的忠告的话，请你告诉我们。

youdao

Also, cover the mouth when coughing and sneezing to prevent the flu bug from escaping into the air.

咳嗽、打喷嚏的时候要遮住嘴，防止流感细菌进入空气中。

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Doctor Fry says it is better to prevent the flu than to have to treat it.

VOA: special.2009.03.04

That was extremely important." Even high-level officials demonstrated ways to prevent the flu from spreading.

VOA: standard.2010.04.29

In the meantime, the Obama administration is urging common-sense steps to prevent the spread of swine flu, including frequent hand-washing and asking flu sufferers to stay at home.

VOA: standard.2009.05.03

The video should inform and motivate people to take steps to prevent the flu.

WHITEHOUSE: Around Town

Consumers should beware, however, of products sold over the Internet claiming to cure or prevent the flu, the FDA said last week.

CNN: Flu season: Worst may be over

It can prevent the flu, and it can be beneficial even if you do get sick, said Dr. Bill Schaffner, chairman of the preventive medicine department at Vanderbilt University's School of Medicine.

CNN: Had a flu shot? You'll be OK -- maybe