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。
On turning eagerly to the text, one learns that the lady was a typist who found the sound of office typewriters worried her more and more until eventually she had to go into a mental hospital.
当人们急切地看完正文后,便知道这位女子是个打字员,办公室打字机的声音使她越来越烦恼,最终住进了精神病医院。