gastrulation [ˌgæstrʊ'leɪʃən]

例句:

• This pushing - in of cells marks the start of gastrulation.
  细胞的这种向里推进标志着原肠胚形成的开始.
  
• The outer layer of a blastula that gives rise to the ectoderm after gastrulation.
  外胚层囊胚的外层,在原肠胚形成之后生后外胚层组织.
  
• If gene activity were not required for gastrulation and further development, the hybrids should survive as well as nonhybrids.
  来自SA