Every day they gave the old man food that was easy of digestion.

他们每天给老人易于消化的食物。

youdao

He can only eat the food that is easy of digestion.

他只能吃易于消化的食物。

youdao

This food is easy (difficult) of digestion.

这食物易（难）于消化。

youdao

This food is easy (difficult) of digestion.

这食物易（难）于消化。

youdao