n 縱列(隊)，行列(line of people or things positioned one behind another) [C，Gp]：march in～成縱隊前進;The boys entered the room in a single～. 男孩子排成單行走進屋子?！纪?line，queue，rank，row;
(in) single/Indian file 成一路縱隊：The soldiers were marching in Indian～. 士兵們成一路縱隊前進。
v 排成單行或縱隊行進(walk or march in file) [I，I+prep，I+adv]：～across the road/into the hall 排著隊穿過馬路/走入大廳;The judges～d in/out. 法官們魚貫而入/出;The passengers～d past the ticket collector. 旅客們排著隊從檢票員身邊走過。