Outside of the nucleus are two centrosomes, each containing a pair of centrioles.

细胞核外有两个中心体，每个中心体包含一对中心粒。

Non kinetochore microtubules lengthen, pushing the centrosomes farther apart.

非动粒微管变长，将中心体推向更远的距离。

Other microtubules will interact with microtubules from the opposite centrosome.

其他微管将与对面中心体的微管相互作用。

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。