up to (doing) something idiom
好得能胜任
good enough for a particular activity
He wants to compete at international level, but honestly I don't think he's up to it. 他想参加国际比赛,但说实话,我认为他还达不到那个水平。
强壮得能进行(某种活动)
strong enough for a particular activity
It was a serious fall - it'll be a while before you feel up to walking again. 摔得很严重——得过一阵子你才能行走。