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。
By the time you read this, the Hubble's eagle eye will have sent us thousands and thousands of wonderful pictures.
等到你读到这篇文章时,敏锐的哈勃望远镜已经为我们送来了成千上万张精彩的照片。