Definition
To press the upper and lower teeth together, often as a sign of anger or frustration.
（常指因愤怒而）咬紧牙关。
Upon hearing the news, he gritted his teeth, unable to utter a word.
听到这个消息，他咬紧牙关，说不出话来。
She gritted her teeth, trying to contain her rage.
她咬紧牙关，试图压制自己的愤怒。
He felt so frustrated, he could only grit his teeth and endure it.
他感到非常沮丧，只能咬紧牙关忍受。
- C2
To face a difficult or unpleasant situation with determination and resolve.
咬紧牙关，下定决心（以应对困难的局面）。
Although the situation was tough, they gritted their teeth and continued working.
虽然情况很艰难，但他们咬紧牙关继续工作。
To complete this project, we have to grit our teeth and put in the extra effort.
为了完成这个项目，我们必须咬紧牙关付出额外的努力。
Despite facing many challenges, she gritted her teeth and persevered.
尽管面临许多挑战，她还是咬紧牙关坚持了下来。