the pain barrierin sport, the point that you reach when you continue trying to do something, even though you are in pain, very tired, or injured 〔体育运动中〕痛楚[疲劳,受伤]的难关 Iona reached the final, but she had to go through the pain barrier to get there. 艾奥娜进入了决赛,不过她是克服伤痛才走到这一步的。
→ the pain barrier at pain barrier(1)