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

最，一种连接酶会将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，DNA酶会填补侧连接处；DNA连接酶会将化学键连接起来。

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

然， DNA 酶和连接酶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，他绘制了另外种酶参与方式：填补 DNA 酶和将片段缝在一起 DNA 连接酶。