直到上周，我还在开开心心地沉浸在无知中，根本不知道这世界上有这么个叫klout的东西。

Until last week I had lived in happy ignorance that such a thing as klout existed.

这显然就是Facebook用来吸引合作伙伴的套路——Facebook高风亮节地为出版商提供了更多的读者，同时双方开开心心地交换了利益。

That's certainly the way Facebook is trying to sell the partnership: as a mutual exchange of goods, driven by the company's desire to help publishers make their articles look as good as possible and reach more readers.

祝朋友国庆佳节：开开心心，每天好心情！

Friends National Day wish: a happy day good mood!

我想永远做个孩子，开开心心的。

I want always to be a boy and have fun.

因为我想放松放松，开开心心过一天。

Because I'm trying to relax and have a nice day.

他捡起自己的毛巾，开开心心地朝房门跑去。

He picked up his towel and ran cheerfully for the door.

尽量拥有美满的家庭生活，开开心心，

Try to have a nice family life, have fun,\\

这是晚会时间。让我们大家开开心心地玩！

It's party time. Let's have fun, everybody!

我不会让你开开心心看着我离开的。

I won't give you the pleasure of seeing me leave.