n. 四轮大马车, 教练

vt. 训练, 指导

vi. 坐马车旅行, 作指导

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