名詞 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
   同義詞：admonisher, monitor

1. The letter was an uncomfortable reminder of my debts.
   那封信是催促還債的通知，讓我很不痛快。
2. This has been a timely reminder of the need for constant care.
   這件事適時(shí)地提醒我們要注意時(shí)時(shí)謹(jǐn)慎。
3. Nine people came in and the reminder stayed outside.
   9個(gè)人進(jìn)來，余下的人留在外面。
4. These ruins are an eloquent reminder of the horrors of war.
   這些廢墟形象地提醒人們不要忘記戰(zhàn)爭的恐怖。