So, this is the lash, and I usually cut off one little strand.

所以，这就是睫毛，我通常会剪掉一小股。

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

然后， DNA 聚合酶和连接酶再次填充并修复被切断的链。

CRISPR-Cas9 nickases, for example, are enzymes that cut only one strand of the DNA double helix.

例如，CRISPR-Cas9 切口酶是仅切割 DNA 双螺旋一条链的酶。

They hammered out thin sheets of gold and cut strands to be worked into the blue, purple and scarlet yarn and fine linen—the work of skilled hands.

把金子锤成薄片，剪出线来，与蓝色、紫色、朱红色线，用巧匠的手工一同绣上。