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。
As the play draws to its close, they wonder whether they will ever catch that last train home.
当戏快演完时,他们又为是否能赶上末班火车回家而犯愁。