a thing that causes someone to remember something 提醒物,令人回忆的东西 the watch tower is a reminder of the days when an enemy might appear at any moment. 岗楼使人们回忆起敌人随时可能会出现的日子。 ■a message or communication designed to ensure that someone remembers something 提示 ■a letter sent to remind someone of an obligation, especially to pay a bill 催单,催缴单