1. This note is only a reminder.´
    谨此提请注意。"

2. She serves as an impressive reminder of the great ships of the past.
    它给人们留下深刻的印象，使人们回忆起历史上的巨型帆船，

3. If he doesn´t pay his bill, send him a reminder.
    如果他拖欠账单不还, 给他送一张催单去。