“长牙”造句

长牙会很难受，婴儿会烦躁不安。
Teething can be painful and make your baby irritable.

我的小弟弟直发脾气,因为正在长牙.
My brother is fretful because he is cutting his teeth.

很多婴儿到一岁大时才开始长牙。
Many infants do not cut their first tooth until they are a year old.