可以用来换取粮票的食物只有这些：代用咖啡、通心粉和小块的人造黄油。There were few provisions available in exchange for food stamps: ersatz coffee, macaroni, small cubes of margarine.这一新的代用甜味剂是用一种野生植物制成的.The new substitute sweetener is made from a wild pl...

“代用”的拼音为：dài yòng...

“代用”的英语可以翻译为：substitute ...