Don't be sad for the falling leaves.

不要为落叶而伤心。

youdao

Brown can also be sad and wistful.

褐色也象征着悲伤与渴望。

youdao

I will be sad if you don't. Yeah?

要是没人问我会很难过，请说？

youdao

Then,the Crimean War broke out. I felt that sad for him that there had to be a war.

VOA: special.2010.03.27

I am going to be sad when they finally get a name for it.

我会感到很伤心的,如果他们最后给它起名的话。

麻省理工公开课 - 固态化学导论课程节选

Maybe you could be talking with another friend, who's very sad that the former friend is getting married.

可能你在和另一个朋友聊天，他对刚才那个朋友结婚的事感到难过。

When 课堂 - SpeakingMax英语口语达人

The paintings themselves might be sad-eyed clowns on velvet purchased at a parking lot art fair.

FORBES: The Frame Game

Would you be sad to fold up your local paper for the last time?

FORBES: You Saw It on the News--But Not in a Newspaper

Nevertheless, I will be sad to see Taymor go, if the reports are true.

FORBES: Julie Taymor Reportedly Leaves Spider-Man