diarrhea

Drink plenty of fluids if you have diarrhea to stay hydrated.如果你腹泻，请多喝液体以保持水分充足。

Travellers often experience diarrhea when their digestive systems are exposed to unfamiliar food and water abroad.旅行者在国外的消化系统接触到不熟悉的食物和水时，经常会经历腹泻。