Seeing her again was a painful reminder of the past.再次见到她勾起了过去痛苦的回忆。

His death is a reminder that they are getting old.他的离世提醒他们自己在变老。

a sharp/stark reminder强烈/明确的提醒

the final reminder for the gas bill煤气费的最后催单

He will do it, but he may need the occasional reminder from you.他会做这件事的, 只不过你可能得偶尔提醒他一下。

This note is just a reminder that the guests are arriving tonight.这张便条只是提醒客人将于今晚到达。