‘原来如此，原来是这样’是指本来不知道或不明白的事，通过别人或自己弄清楚后发出的感叹 “呵呵， 嘿嘿”表示笑或指笑的声音，在电脑上汉语聊天时，发出‘呵呵，嘿嘿’表示你正在笑

So that is what [how] it is. I see. It explains the matter. So that's how matters stand. That accounts for it. No wonder . It's so. 在口语中交谈用hehe,haha就行了

‘呵呵，嘿嘿’在口语中交谈用hehe,haha就行了

the mean like that: that accounts for it!

So that is what [how] it is. I see. It explains the matter. So that's how matters stand. That accounts for it. No wonder . It's so.