I didn't realize (that) you were so unhappy.

我没有察觉到你那么不开心。

《牛津词典》

See, Heidi, I understand now why you are so unhappy.

看，海蒂，我现在明白你为什么这么不开心了。

youdao

I can't bear to see that poor beast so unhappy, and getting so thin!

我不忍心看到那可怜的动物这么不高兴，变得这么瘦！

youdao

Well, Phil's a minor league baseball player, and he travels a lot, and my mom stayed home with me,but I knew it made her unhappy, so I figured I'd stay with my dad for a while.

VOA: standard.other

Coz the comment that we get so often about this class ? is why would Harvard students possibly be unhappy?

因为我们得到的关于这门课的评价常常是,为什么哈佛的学生会不幸福？

哈佛公开课 - 幸福课课程节选

Nature is a meaningless concept just like the lack of meaning within nature, where there's no culture until culture comes along and says, "Oh, not so much there is nature, but I'm terribly unhappy because before I came along, there was nature." Right?

自然是个没有意义的概念,正如自然之中意义的缺乏，自然中原本没有文明，直到文明走过来说，“哦，自然的存在并不算什么，我很不高兴的是因为,我来之前，这里就有自然了“，是吧？

耶鲁公开课 - 文学理论导论课程节选

Voters were so unhappy with Judge Maag that they kicked him off the local appellate court too.

ECONOMIST: Tort reform

Do I have that right, and what is it that people are so unhappy about if so?

NPR: Large Turnout Sets Up France's Left-Right Runoff

If stepmothers weren't so unhappy, the divorce rate for second marriages, as high as 60% to 75%, might be reduced.

CNN: The plight of stepmoms on Mother's Day