Centromere is the primary constriction on the chromosome, a region at which the sister chromatids are held together.

着丝点是染色体的主缢痕，在这个地方姐妹染色单体连在一起。

youdao

The sister dared not speak to her.

那姆姆不敢和她说话。

youdao

She is the sister everybody would want.

她是每个人都想要的好姐妹。

youdao

This week,Kim Jong Un and his aunt, the sister of Kim Jong Il, became four-star generals with little military experience.

VOA: special.2010.10.02

You remember they're wandering around the forest without her picking berries. The younger brother, - the second brother, is most concerned about his sister's safety -- so I want you to look at this passage.

你们记得他们在树林中游荡,没有拿他们采摘的果子，小哥哥，也就是二哥哥，是最关心他妹妹安全的-,所以我想让你们看这篇文章。

耶鲁公开课 - 弥尔顿课程节选

So notice first here that the younger brother compares his sister's virginity to a miser's treasure.

所以首先注意这个小哥哥,他将妹妹的贞节与吝啬鬼的财富作比较。

耶鲁公开课 - 弥尔顿课程节选

And in this electronic world, who needs the International Monetary Fund, the sister bureaucracy to the World Bank?

FORBES: Where Greed Is Good

The sister, Beth Serrano, read a statement asking for her family's privacy to be respected.

BBC: Ohio women were held with ropes and chains, police say

But a buyer was found for the sister plant at Llangefni, safeguarding some 300 posts there.

BBC: Anglesey Vion meat plant to close with 310 jobs lost