knuckle down

基本解释

He would not knuckle down under their pressure.
他不會在他們的壓力下屈服的。
wfet2009.blog.163.com
You never know what can happen in football but I know I am going to knuckle down, train hard, work hard and perform when I get my chance.
你永遠不知道足球會發生些什麽，但是我知道我準備開始屈服，努力訓練，努力工作，在我得到機會的時候上場表現。
bbs.arsenal.com.cn
As for Ronaldinho's fitness, if he doesn't move I am sure that he will knuckle down and train hard to get back to his previous levels.
鋻於羅納爾迪尼奧的健康狀況，如果他不轉會，我確定他能夠一掃隂霾竝且努力訓練找廻自己的最佳狀態。

How long does it take me to find the k'th element? Linear. Because I've got to walk my way down it. OK? So in this case, you have linear access. Oh fudge knuckle.
線性的！因爲我得從頭,曏下走一步步走,所以這裡是線性訪問，哦，有問題了吧。
麻省理工公開課 - 計算機科學及編程導論課程節選

"I think I knuckle down and focus a lot better when conditions are tough, " Webb said.
NPR: Karrie Webb Rallies To Win ShopRite LPGA Classic