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。
I don't like autumn and winter.The days are short and the nights are long.The sun rises late and set early.
我不喜欢秋天和冬天,因为此时白天短而夜晚长,太阳升得迟而落得早。