只有一件事让我不开心。

There was only one thing that was making me unhappy.

她看起来很不开心，我不知道该怎么解决。

She just seems so unhappy and I don't know what the solution is.

我不开心时，你要哄我开心；

Care about me and no scolding.

我知道你不想看到我不开心。

I didn't think you'd wanna see me depressed.

我不开心, 这个是既定的事实.

I am not happy, this is an established fact.

我知道你一直不开心，我不想假装知道为什么。

I know you have been melancholy. I don't pretend to know why.

我不知道怎样用英语来写你的绯闻，这是最令我不开心的。

I don't know how to write your pink news in English, which upsets me the most.

不管什么时候我不开心了，总是我的朋友使我振奋起来。

No matter when I'm unhappy, it is my friend who cheers me up .

我得承认我对我妻子有所偏爱，我不想看到她不开心，所以我最终妥协了。

I must admit to a prejudice in favor of my wife. I didn't want to make her unhappy. So I agreed with her at last.

我告诉她，每当我不开心的时候，我的奶奶就会给我“空手劈”。

I told her, whenever I'm sad, my grandmother gives me karate chops.