例句 /

A tooth with a single cusp. Cuspids have the longest root of any tooth. Also known as a Canine.

A tooth with a single cusp. Cuspids have the longest root of any tooth. Also known as a Canine.

只有一个牙尖的牙齿.任何一个尖牙都有一个较长的牙根.也称为犬齿.