咬定牙根

see 咬緊牙關|咬紧牙关[yao3 jin3 ya2 guan1]

to bite / to nip

variant of 咬[yao3]

to assert / to insist that

to set / to fix / to determine / to decide / to order

tooth / ivory / CL:顆|颗[ke1]

root of tooth

root / basis / classifier for long slender objects, e.g. cigarettes, guitar strings / CL:條|条[tiao2] / radical (chemistry)