5.The milk turned because we did not refrigerate it.
牛奶变酸了,因为我们没有它放到箱里
6.This refrigerate doesn't seem to be very even. Just put a block of wood under its bottom.
"箱似乎放不平,在箱的底下放一块木头吧。"
7.The application advantages and the possible problems of developing nonmechanical refrigerated container using dry ice are discussed deeply,and the respond solutions are put forward.