grit your teeth idiom
(常指因愤怒而)咬牙切齿
to press your top and bottom teeth together, often in anger
He gritted his teeth in silent fury. 他气得咬牙切齿,一言不发。
C2 咬紧牙关,下定决心(去应付棘手的局面)
to accept a difficult situation and deal with it in a determined way
We had to grit our teeth and agree with their conditions because we wanted the contract. 因为我们想要拿到那份合同,就必须咬牙答应他们的条件。