n. (sports) someone in charge of training an athlete or a team
n. a person who gives private instruction (as in singing, acting, etc.)
n. a carriage pulled by four horses with one driver
v. teach and supervise (someone); act as a trainer or coach (to), as in sports
n. 四轮大马车, 教练
vt. 训练, 指导
vi. 坐马车旅行, 作指导