Tā chībǎo le, mō zhe yuángǔngǔn de dùzi tǎng zài shāfā shàng.
Full after dinner, he lay on the sofa rubbing his round belly.
Tips
grammar
圆滚滚 is an ABB adjective: 圆 "round" plus a doubled 滚 "rolling". Like 胖乎乎, it already carries its own degree, so it takes 的 and never 很: say 圆滚滚的, not 很圆滚滚.
