肚子 (dù zi): 腹; 腹部; 胃; 腹; 腹部; 心; 心 (慣用表現において)

I'm hungry, I want to eat.

He had a stomachache, so he didn't come to class.

Eating too much will make your stomach uncomfortable.

Her belly is getting bigger and bigger because she is pregnant.

My stomach is upset; maybe I ate something bad.

My stomach hurts.

He ate so much that his belly is bulging.

I'm hungry, let's go eat.

He has had diarrhea these past few days and cannot eat greasy food.