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来源：雅诚德英语网
The biological cell's cell nucleus, includes the chromosome, the composition divides into DNA.
生物细胞的细胞核，含有染色体，组成分为dna。
The biological cell's cell nucleus, includes the chromosome, the composition divides into DNA.
生物细胞的细胞核，含有染色体，组成分为dna。