by chance unintentionally； by accident 偶然地；意外地 at one time formerly 从前，曾经 level off/out move horizontally （after climbing）； remain steady （after a rise） （爬高后）水平移动；（上升后）达...
Formerly the head of technical development at European soccer's governing body UEFA, the one-time Scotland national team coach has been hired in part to develop the team's youth academy.