教练定义
coach dog───教练犬
coached───v.指导；训练（coach的过去分词）；培养
coachee───n.马车夫（等于coachman）
coachees───n.马车夫（等于coachman）
coachbuilder───车身制造厂
concede defeat───承认失败；认输
coach box───n.马车夫的座位
coach boxes───n.马车夫的座位
coach dogs───教练犬
