They also can't help but spread their mouth and show their little blunt teeth when they like something, which is called "smiling. ""

他们内心欢心的时候，还会不由自主地扬起嘴角，露出小小的、钝钝的牙齿，他们管这叫叫“微笑”。

youdao

A wooden lever with a movable metal hook near one end, used for handling logs. It is similar to a peavey but has a blunt tip, often with teeth.

一端附近有可移动金属钩的木制杠杆，用来搬运木头。类似尖头搬钩，但有一常带齿的钝顶。

youdao

As Wilson tells the story, the Cardinal became so agitated one night, observing a dinner guest pick his teeth with the double-edged knife still in use, that he ordered blunt knives for his household.

NEWYORKER: A Fork of One��s Own