DNA是由两个相关联的聚核苷酸链组成的双螺旋分子…
DNA is composed of two polynucleotide chains associated so as to form a double helical molecule.
DNA（脱氧核糖核酸）的分子是一种双螺旋结构，酷似一架沿纵向扭曲的梯子。
The DNA molecule is a double helix, resembling a ladder that's been twisted along its length.
正如没有DNA双螺旋结构的发现，就没有遗传传达传递的中心法则，也就没有今天的分子生物学。
Just like does not have the DNA double helix structure discovery, has not inherited the transmission transmission the central dogma, also does not have today's molecular biology.
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