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

，一种接酶会将DNA端接起来。

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

，DNA合酶会填补侧接处的；DNA接酶会将化学键接起来。

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

然， DNA 合酶和接酶再次填充并修复被切断的链。

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，他绘制了另外种酶的参与方式：填补的 DNA 合酶和将片段缝合在一起的 DNA 接酶。