It's sometimes sad, but as you're watching the set come out, at the same time you're watching another new set come in.

那个时刻是伤感的，但你看着布景退出的同时，你又看着另一个新布景流行起来。

youdao

After they left he'd have a story about them or their kids-sometimes funny, sometimes sad, usually sympathetic, always understanding.

等他们走了后，他开始讲这些人以及他们的孩子的故事。这些故事时而好笑，时而伤悲，常常是感同身受，总是善解人意。

youdao

But now I am not only busy, but also having a lot of complex feelings. I am sometimes moved, sometimes sad, sometimes delighted and sometimes miserable.

从前是忙很多事情而没有自己的时间，但是不会有这么多感触，而最近不仅是忙，而且还有很多情感的触动，让我时而感动，时而伤感，时而欢乐，时而悲伤。

youdao

Sometimes they become angry or sad,hear voices, or see things that are not there.

VOA: special.2009.12.28

"What I really feel very strongly about, and I hope reflects in all aspects of my work, is the human touch, the humanness of things, the positive and sometimes the negative and sometimes the sad, " Christenberry says.

NPR: Christenberry Photos Capture the Changing South

Facebook, I have discovered, can sometimes bring very sad news.

CNN: When a Facebook friend dies

Sometimes I see myself sad and lonely, but I think I deserve to be more happy.

CNN: December 17, 2012 -- Updated 1437 GMT (2237 HKT)