reminder

名词 reminder:

1. a message that helps you remember something
2. an experience that causes you to remember something
3. someone who gives a warning so that a mistake can be avoided
   同义词：admonisher, monitor

1. The letter was an uncomfortable reminder of my debts.
   那封信是催促还债的通知，让我很不痛快。
2. This has been a timely reminder of the need for constant care.
   这件事适时地提醒我们要注意时时谨慎。
3. Nine people came in and the reminder stayed outside.
   9个人进来，余下的人留在外面。
4. These ruins are an eloquent reminder of the horrors of war.
   这些废墟形象地提醒人们不要忘记战争的恐怖。