turn-roundn1 (also `turn-around) (usu sing 通常作单数) (of a ship or an aircraft) process of being unloaded at the end of one journey and reloaded for the next one （指船或飞机）在一航程终点卸货并为下一航程装货的作业.2 = turn-around.
牛津英汉双解词典