他很难过，决定成为一名科学家来改变这种情况。

He was very sad and decided to become a scientist to change the situation.

youdao

当克拉拉抢走海蒂时，他很难过，海蒂是他最宝贵的财富。

It was very hard on him when Clara robbed him of Heidi, who is and was his greatest treasure.

youdao

“恐怕他病了。”—“听到这个消息我很难过。”

"I'm afraid he's ill."—"I'm sorry to hear that."

《柯林斯英汉双解大词典》

Now, as I said, this is Socrates' last day on earth and you'd expect him to be pretty bummed.

我已经说过了,这是苏格拉底在人世的最后一天,你们肯定以为他很难过

耶鲁公开课 - 死亡课程节选

I get so upset when he talks like that.

他那样说话，我很难过。

I get so upset 课堂 - SpeakingMax英语口语达人