You can substitute plain flour if you cannot find self-raisingflour.
如果你找不到自发面粉,可以用普通面粉来代替。
《柯林斯英汉双解大词典》
2
Self-raisingflour contains a raising agent, but if you only have plain flour on hand, add 2 tsp of baking powder to 1 cup of plain flour.
自发粉里面已经含有发酵介质,如果你手头只有普通面粉,那么一杯普通面粉应加2茶匙泡达粉。
3
We have made it clear in our inquiry that the 1000 ton self-raisingflour should arrive here by May 30, 2006, and that it should be packed in plastic bags of 5 kilo per sack for sales.