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 asked a passenger if this was the Westhaven Express, but he had not even heard of it.
我问一位乘客,这是不是开往威斯特海温的那趟快车,他说从未听说过有这么一趟快车。