He has a healthy appetite.

他胃口很好。

Symptoms are a slight fever, headache and loss of appetite.

症状包括低烧、头痛和食欲不振。

...his appetite for success.

他对成功的强烈渴望

...Americans' growing appetite for scandal.

美国人对丑闻日益增强的好奇心

She gave him just enough information to whet his appetite.

她向他透露的信息刚好能吊起他的胃口。