With a shortage of chromosomes, a developing fetus will likely grow into a child with down syndrome.
如果缺省染色體,一個處于成長階段的胚胎可能發育成一個具有不良綜合癥的小孩。
As the play draws to its close, they wonder whether they will ever catch that last train home.
當戲快演完時,他們又為是否能趕上末班火車回家而犯愁。