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。
One man was told to fix up an air-line to provide compressed air for the machines they were using.
有个工人被派去安装"供气管",给他们正在使用的机器提供压缩空气。