Have a trial run of the route, especially if they walk or cycle.

对路线进行踩点，尤其是当他们徒步或骑自行车上学的时候。

youdao

Have a trial run of the route, especially if they walk or cycle.

对路线进行踩点，尤其是当他们徒步或骑自行车上学的时候。

youdao