“酵母” 是一些单细胞真菌，能将糖发酵成酒精和二氧化碳， 是一种天然发酵剂。 … Please join us first to read this content! / 请先加入我们！Register Already a member? Log in here...
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自然而然说中文 Speak Chinese Naturally
没时间或住在国外？你也可以流利说中文！ Try this efficient and natural way to speak Chinese like a native speaker even if you are lacking of time or living abroad!