good enough for a particular activity好得能胜任
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。
strong enough for a particular activity强壮得能进行(某种活动)
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。