老外临走前说“so long”，好长？真的不是你想的那样！

so long是“再见”的非正式表达，经常用在你跟对方要有比较长的时间不能见面的情况下，比如有人要去出差一段时间，你跟他再见的时候可以用so long。有点类似中文的“后会有期”。So long, 在我们的理解中总觉得类似“long time no see”更像是见面寒暄的一种但实际上so long则被西方人用来当“再见”讲但究竟为什么用so long却有许多不同的说法So where did it come from?Some believe the phrase to be adapted from another language. One suggestion is that so long is from the Irish good-bye slán, which is not an unreasonable theory. 有些人认为这个短语是从另一种语言改编而来的。其中一个说法是，so long是出自爱尔兰语的再见slán。这个理论听起来似乎有一点道理。Other possible sources that have been proposed include German adieu so lange (roughly translated: "farewell until we meet again"), Hebrew shalom (a greeting and a good-bye), and ………………………………