And there is more to learn. Jonathan Rottenberg says the science of crying is still in its infancy.

VOA: special.2009.01.28

because we're still sort of in the infancy of everything.

因为我们还是在发展的初期。

重建社团小组 - SpeakingMax英语口语达人

Further, the significance of Moses is hinted at through literary allusions in the narrative of his birth, his infancy.

而且，摩西的重要性也有被暗示,在对他出生和婴儿期叙述中。

耶鲁公开课 - 旧约导论课程节选

Positive psychology, the field of health psychology is in infancy.

积极心理学，健康心理学的研究还处于初级阶段。

哈佛公开课 - 幸福课课程节选