起提醒作用的东西
Reminder \Re*mind"er\ (-?r), n. One who, or that which, reminds; that which serves to awaken remembrance.
reminder
n 1: a message that helps you remember something; "he ignored his
wife's reminders"
2: an experience that causes you to remember something
3: someone who gives a warning so that a mistake can be avoided
[syn: {admonisher}, {monitor}]