He wanted his supper of little fat mouse!

他要吃小肥鼠当晚饭！

You mean different—fatter mice or something?

你的意思是不同的——更胖的老鼠还是什么？

They also took with them an offering of three fat mice as a present for Old Brown, and put them down upon his door-step.

他们还带了三只肥老鼠作为礼物送给老布朗，放在他家门口的台阶上。

And further detective work, including examination of the mice's faeces, revealed higher levels of a strain of Clostridium called OUT-1105 in the fat mice than in the thin ones.

他们研究发现，肥胖的小鼠粪便中OUT-1105这种梭状芽胞杆菌的水平要高于瘦削小鼠。