齿痕

齿痕 是两人刻意隐藏

(而留下的齿痕) ── Previous context

“They both deliberately hid the bite mark.”

而留下的 齿痕

(是为了掩盖之前被咬) ── Previous context

“to cover up a bite mark he received earlier.”

而是猫或黄鼠狼一类动物的 齿痕 吗？

(看不出这断头的切口不是刀痕) ── Previous context

“but from a cat or weasel's teeth?”

你右手虎口这道 齿痕

(等等) ── Previous context

“This bite mark on the first web space of your right hand”

看不出这断头的切口不是刀痕

(你身为医监) ── Previous context

“Can't you tell the cut isn't from a blade,”