Good sister to play together 好姐妹一起玩
New Year's Eve, I setting off firecrackers with my brother and sister together.
除夕夜,我和我的兄弟姐妹在一起燃放鞭炮。
The brothers kissed their sister and all eight of them went home together happily.
兄弟们亲了他们的妹妹一下,八个人一起高高兴兴地回家了。
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。
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