Racea拉恰racen.赛跑；竞争n.人种；种族；血统v.赛跑；竞赛racemic calcium pantothenate消旋泛酸钙Race from a standing start.站立起跑的赛跑。raced my friend downstairs.往楼下追我朋友raceway parallelism with face滚道对端面的平行度Race plays a powerful role.种族扮演了一个重要角色。Racemic Lobeline Hydrochlorideraceway' s shrimp culture moderacetrack baggage reclaim unit旅客领回行李机动输送系统racemose corydalis herb or root黄堇Race relations are good here.此地种族关系良好。

1. One day in Hong Kong many years ago, I was doing some racewalk training in preparation for a race.
   多年在香港，有一天，我正在为一场比赛练习竞走。