One of the things they can do is suck, and these babies would suck on a pacifier to hear French.

他们能做的事情之一就是吮吸,这些婴儿听到法语时会去吮吸奶嘴

耶鲁公开课 - 心理学导论课程节选

One of the few things babies can do is they could suck on a pacifier.

吮吸奶嘴是婴儿能够做到的,为数不多的事情之一

耶鲁公开课 - 心理学导论课程节选