He got after his sister for tracking mud into the house.他责备妹妹脚下踩着泥走进屋里.I followed him, tracking him in the snow until finally he got tired.我跟着他，在雪地里追踪他，直到他最终体力不支。The precise tracking of artificial satellites has enabled ...
Tracking assigns some students to college prep and others to vocational programs.按照能力，一些学生被分到大学预科班，另一些则被分到职业培训班。He got after his sister for tracking mud into the house.他责备妹妹脚下踩着泥走进屋里.All citizens should help the police i...