我觉得是咬牙坚持着的意思吧

Hang in there. Giving up is not our choice. We have to hang in there and overcome these challenges. Hang in there means to persist in a difficult situation or never give up. Here are example sentences : Hang in there! Soon you will graduate and get the job you want. I know you’re having a hard time at work, but you have to hang in there.