Prevent the flu and colds by smiling.
微笑可以预防流感和伤风。
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。
A good solid cleaning will prevent the spread of the flu.
时常仔细清洗物品，可以防止流感传播。
My topic is to do with how to prevent the bird flu.
我的话题有关怎样预防禽流感。
We should take steps to prevent the spread of flu.
我们应采取措施阻止流感的蔓延。
We should take effective measures to prevent the H1N1 flu virus from spreading...
我们应当采取有效的措施来阻止甲型H1N 1流感的传播。
We should take effective measures to prevent the H1N1 flu virus from spreading...
我们应当采取有效的措施来阻止甲型H1N 1流感的传播。
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