Yet even now, at opposite poles of the Earth, animals thrive in the icy wild.

然而，即使是现在，在地球的两极，动物们在冰冷的荒野中茁壮成长。

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。

Anaphase 1 Kinetochore microtubules shorten, pulling homologous chromosomes, which consist of a pair of sister chromatids, to opposite poles.

后期 1动粒微管变短，将由一对姐妹染色单体组成的同源染色体拉向相反的两极。

Magnetic force causes similar poles to repel one another, and opposite poles to attract.

磁力使相似的磁极相互排斥，相反的磁极相互吸引。