overtrain

the team overtrained their young players.

球队使年轻队员训练度了。

a coach who overtrained the athletes before the championship.

在锦标赛前度训练运动员的教练

It's also possible to overtrain — something high school athletes need to watch out for.

训练多是有可能发生的-----一些高中生运动员及其需要注意。