blastula ['blæstʃələ]

例句:

• 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.
  
• It enter the late blastula stage in 6 h 50 min.
  6小时50分进入低囊胚期.
  
• The cells of the blastula , called blastomeres, also each receive a full diploid set of chromosomes.
  这些囊胚细胞, 称卵裂球, 每个细胞都有一套二倍体染色体组.