grit your teeth
US /ɡrɪt jʊər tiːθ/
UK /ɡrɪt jʊər tiːθ/

1.
咬紧牙关, 忍耐
to accept a difficult situation and deal with it in a determined way
:
•
I had to just grit my teeth and get through the last few miles of the marathon.
我不得不咬紧牙关,跑完马拉松的最后几英里。
•
She didn't like the job, but she decided to grit her teeth and finish it.
她不喜欢这份工作,但她决定咬紧牙关完成它。