DNA双螺旋链在复制和转录的过程中要在酶的催化下解旋，这是一个高度复杂的过程，目前还无法用物理学的方法来描述。
During the replication and transcription, DNA unwinds the double helix under the control of an enzyme. It is a very complex process beyond a physical description.
左氧氟沙星可通过作用于细菌的脱氧核糖核酸旋转酶，抑制细菌DNA的复制和转换，发挥广谱抗菌作用。
It can affect the function of DNA gyrase in bacteria, which results in the inhibition of the duplication and transformation of DNA.
端粒酶的主要功能是复制端粒末端dna，维持端粒长度。端粒酶活性调节与肿瘤发生和细胞衰老有着密切关系。
The main function of telomerase is for the replication of telomere DNA, which is closely related with tumor and cell senescence.
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