[] () a person who trains sb to do sth or gives lessons or advice教练；培训师◆Coaches can help you become a better business leader.培训师可以帮助你成为一位更好的企业领导者。⨁a business / career / executive / team coach企业／职业／行政／团队培训师 () a comfortable bus for carrying passengers over long distances长途客车；长途汽车◆Travel is by coach to Berlin.乘长途客车去柏林旅行。 () the cheapest seats in a plane（飞机的）经济舱◆to fly coach坐飞机经济舱⨁coach fares / passengers / seats飞机经济舱票价／旅客／座位➡mentor