ontogenist

例句：

1. 1. He is an expert in the fieldof embryology.
   他在胚胎学领域是一位专家。
2. 2.The research on embryology has made significantprogress in recent years.
   近年来，胚胎学研究取得了显著进展。
3. 3.The embryologist conducted athorough examination of the fetus.
   胚胎学家对胎儿进行了彻底的检查。