[with obj.]go back over (the same route that one has just taken) 顺(原路)返回 he began to retrace his steps to the station car park. 他开始顺原路返回车站停车场。 ■discover and follow (a route or course taken by someone else) 跟踪(另一人走过的路线) I've tried to retrace some of her movements. 我试图跟踪她的一些活动。 ■trace (something) back to its source or beginning 追溯;溯源 I wanted to retrace a particular evolutionary pathway. 我想弄清进化的一种特定途径。