orientation course英 [ˌɔːriənˈteɪʃn kɔːs]美 [ˌɔːriənˈteɪʃn kɔːrs]定向航线;已熟悉的航线; 定向课程;示向(指导)学程英英释义nouna course introducing a new situation or environmentSynonym:orientation双语例句