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旅行者腹泻每年影响数百万人。
Travelers' diarrhea affects millions of people annually.
youdao
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在开发中国家旅行,约一半的人会罹患旅行者腹泻。
Traveler's diarrhea affects up to half of people who travel to developing countries.
youdao
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在开发中国家旅行,约一半的人会罹患旅行者腹泻。
Traveler's diarrhea affects up to half of people who travel to developing countries.
youdao