- backing coat底面涂层;
- backing brick背衬砖;
- lose track of不了解...的情况，不了解...的动态;
- on the track of追踪某人，寻找某人或某物;
- track suitn.径赛服;
- track sports径赛;
- track shoe链轨板;
- track recordn.记录;
- track pad跟踪板;
- track outv.追踪出;
- track meetn.<美>田径运动会;
- track eventsn.径赛;径赛项目( track event的名词复数 );
- track eventn.径赛项目;
- track down追捕到，追查出;追寻;查获;
- track and field田径;
- track recordsn.记录( track record的名词复数 );
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