Finally, a ligase enzyme which would be the glue binds the two ends of DNA.

最后，一种连接会将DNA端连接起来。

Finally, DNA polymerase fills the gaps on both sides of the union and DNA ligase seals the bond.

最后，DNA会填补侧连接白；DNA连接会将化学键连接起来。

Then, DNA polymerase and ligase again fill in and repair the cut strand.

然后， DNA 和连接再次填充并修复被切断链。

He then mapped out how two other enzymes are involved: DNA polymerase, which fills in the gap, and DNA ligase, which stitches the pieces back together.

然后，他绘制了另外种参与方式：填补白 DNA 和将片段缝在一起 DNA 连接。