LOL
lol是 "laughing out loud", or "lots of laughs"的缩写，表示笑得很开心的样子，是网络常用的缩略语。
The origin of LOL is unknown. It is rumored that it first started in print in 1973. 起源并不清楚，据谣传1973年在印刷品中就出现了这个缩略语。
Other rumors attribute its use to the Dutch word lol meaning 'fun'.还有一种说法是，这个词是荷兰语中的"快乐"一词.