emesis

After eating the spoiled seafood, he experienced violent emesis.

用法提示：emesis 作不可数名词，表示呕吐的动作或症状。

Morning sickness during pregnancy often involves emesis upon waking.

用法提示：emesis 指呕吐这一生理现象，常与 morning sickness 搭配。

One common side effect of chemotherapy is severe emesis.

用法提示：emesis 作为医学术语，描述化疗引起的呕吐反应。