Although the foodmaterial was limited, Dou's idea was unlimited.
虽然食材有限，但窦娥的想法却是无穷的。
2
It introduces the foodmaterial, cooking ways and other relative things.
它介绍了食材，烹饪方法，以及一些相关事物。
3
These bacteria actually combine the hydrogen sulfide with the carbon dioxide and this chemical reaction is what produces organic material which is the food for larger organisms.