难过 (nán guò): 悲しい; 気分が悪い; (人生が) 大変である; 悲しい; 気分が悪い; 体調が悪い; 不快である; (人生、時代が) 困難である; 耐え難い

Hearing this news, she felt very sad.

He felt sad because he didn't do well on the exam.

Don't be sad; everything will get better.

Seeing my friend sad, I also feel sad.

He was so sad that he could not speak.

I feel a bit sad and want to be alone for a while.

Although life is hard, one still has to keep going.

Seeing him cry, I started to feel sad too.

After the breakup, he felt sad for several days.