旅行者腹泻每年影响数百万人。

Travelers' diarrhea affects millions of people annually.

youdao

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

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