With a shortage of chromosomes, a developing fetus will likely grow into a child with down syndrome.
如果缺省染色体,一个处于成长阶段的胚胎可能发育成一个具有不良综合症的小孩。
Fine, thanks. Oh, That's the bell. Everyone is going into class, we'd better go too.
很好,谢谢。啊,铃响了。大家都去上课。我们最好也去。