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来源:雅诚德英语网
You know that all of a person's genetic information is contained on very long pieces of DNA called Chromosomes.
你知道,一个人所有的遗传信息都包含在一个叫做染色体的长DNA片段上。
You know that all of a person's genetic information is contained on very long pieces of DNA called Chromosomes.
你知道,一个人所有的遗传信息都包含在一个叫做染色体的长DNA片段上。