旅行时注意饮食，以防止腹泻发生。

Lǚxíng shí zhùyì yǐnshí, yǐ fángzhǐ fùxiè fāshēng.

Pay attention to diet while traveling to prevent diarrhea.

孩子感染了病毒，出现了腹泻。

Háizi gǎnrǎnle bìngdú, chūxiànle fùxiè.

The child got infected with a virus and developed diarrhea.

水土不服可能导致腹泻症状。

Shuǐtǔ bùfú kěnéng dǎozhì fùxiè zhèngzhuàng.

Traveler's diarrhea may lead to symptoms of diarrhea.