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。
At the moment, they cover every inch of floor space and I actually have to walk on them to get in or out of the room.
这会儿,书把地板的每一点空隙都占据了,我实际上是踩着这些书进出房间的。