FYI：
Written abbreviation for for your information: used, for example in emails, when you send someone an announcement or tell someone something that you think they should know.
“FYI” 是 “for your information” 的缩写，意思是 “供你参考”。人们用 “FYI” 快速、简单地告诉他人自己将提供一些别人原本可能不知道的信息。
“FYI” 既可以用于句首，也可以用于句尾。它多被用在书面语中，但也越来越多地被用于口语交流中。
例句
FYI, the meeting time has been changed from 9 to 10.
通知你：会议时间从九点改到了十点。
Just FYI, Ning is off ill today.
告诉你一下，宁今天生病不上班。
We’re going to launch our new product in two weeks, FYI.
我们将在两周后推出新产品，供你参考。
