[网络] 平纹布

This powder has to be sifted, to separate the husks from the flour. 然后, 人们利用筛子将面粉与外皮分离。 The husks are hard and coarse, and they would not be good food for us, for we could not digest them. 外皮坚硬且粗糙, 我们

发表于:2018-12-18 / 阅读(53) / 评论(0) 分类 英国学生科学读本
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