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It's encased within a membrane, a cell membrane which we talked about the structure of.
都是膜包围细胞器,我们刚讲过其结构的那种膜
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$firstVoiceSent
- 来自原声例句
It's encased within a membrane, a cell membrane which we talked about the structure of.
都是膜包围细胞器,我们刚讲过其结构的那种膜
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