susceptible

婴儿更容易受到感冒的影响。

Babies are more ___susceptible to catching colds.

老年人更容易受到寒冷天气的影响。

Elderly people are more ___susceptible to cold weather.

小孩子对表扬特别敏感，容易受到鼓励。

Young children are highly ___susceptible to praise and easily encouraged.