deque

例句：

1. 1. The students lined up in front of the stage.
   学生们排成一列站在舞台前。
2. 2.She stood in line at the checkout counter for 15 minutes.
   她在结账柜台前排队等待了15分钟。
3. 3. They formed a long line to enter the museum.
   他们排成了长长的队伍进入博物馆。