A/s/i?=age/sex/location?

你的年龄/性别/所在地?

Lol=laugh out loud

笑得很大声(意即很好笑)

BRB=be right back.

稍后回来.

KIT=keep in touch.

保持联络.

FTF=face to face.
面对面.

IMO=in my opinion.

我认为

IOW=in other words

换句话说

TIA=thanks in advance.

先谢谢了.

TTuL/TTYL=talk to you later.

一会儿再聊.

IAE=in any event

无论如何

PEM=privacy enhanced mail

保密邮件