infant

The hospital specializes in medical care for premature infants in its neonatal unit.

(Chinese) 这家医院的新生儿科专门负责早产儿的医疗护理。

An infant's immune system is very delicate and requires multiple vaccinations.

(Chinese) 婴儿的免疫系统非常脆弱，需要接种多次疫苗。