n.肚子;胃
My tummy always aches when I drink milk. 喝牛奶都肚子痛。
Bud, stop carrying on about your tummy ache like that. 巴德,别为肚子痛大呼小叫了。
I feel a little sick to my tummy. 我感觉胃部有点儿不舒服。