I'm full. 我吃饱了。

　　I couldn't eat another mouthful. 我一口都吃不下了。

　　I've done very well, thanks. 吃的很饱，谢谢。

　　I'll burst if I eat another mouthful. 再吃一口就爆炸了。

　　I couldn't manage another mouthful. 一口都吃不下了。

　　I'm stuffed. 吃饱了。

　　I've had all I can eat. 吃的很饱了。

　　I can hardly move. 吃得都不能动了。