they contain flour
它们含有面粉
以上为机器翻译结果，长、整句建议使用 人工翻译 。
They contain flour, eggs, milk and baking powder.
它含有面粉，鸡蛋，牛奶和发酵粉。
youdao
Hotcakes are also called pancakes. They contain flour, eggs, milk and baking powder.
烤饼也称为煎饼，由面粉、鸡蛋、牛奶和发酵粉而制成。
They contain flour,eggs, milk and baking powder.
VOA: special.2011.02.20
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