1 a number of things (actions, events, etc) that happen or come one after another 连续发生或接连的行动、事情等:
Complete the following sequence: 1, 4, 8, 13, ...请完成下列数字序列:1、4、8、13…
2 [U] the order in which a number of things happen or are arranged 次序;顺序:
The photographs are in sequence.相片按次序排列。