我们还剩下一个，异核双原子分子的例子没讲，这里组成分子的原子，是不同的。
And where we had left off was we were going to start one example of thinking about now where we have a heteronuclear diatomic molecules, so two different atoms in terms of forming the molecule.
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.
原核生物rna聚合酶全酶的组成成分。
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