n.出牙,出牙期;
v.出牙,生乳牙( teethe的现在分词 );
例句:
Babies like to chew something when they're teething.
幼儿长牙时爱咬东西.
Especially with his teething.
特别是他现在开始长牙.
That company then use used the chemical to make the teething medicine.
然后那个公司用这些化学原料做成了牙痛药.