gnashers

He grinned, revealing his pearly white gnashers.

他咧嘴一笑，露出了他潔白如珍珠的牙齒。

She gripped the sandwich with her gnashers before tearing it in half.

她用牙齒咬住三明治，然後把它撕成兩半。

The child clenched their gnashers, trying not to cry.

孩子咬緊牙關，試著不讓自己哭出來。