The spindle fibers shorten and the centromere divides, so each chromosome becomes two separate chromatids.

纺锤丝缩短了，着丝粒分裂，所以每个染色体变成两个独立的染色单体。

Centrosomes move to the polar regions and arrange spindle fibers for the second meiotic division.

中心体向两极移动，组装纺锤体。

In metaphase 2, the centromeres contain two kinetochores that attach to spindle fibers from the centrosomes at opposite poles.

中期 2，着丝粒与纺锤丝连结。