Both happiness and sadness in our life would fade away with time.

生命中无论快乐还是悲伤，终将随时光一起逝去。

youdao

Our beloveds hold great significance for us and this makes these people a source of both great happiness and deep sadness; they can bring us great joy, but they can also hurt us deeply.

我们的爱人对我们来说非常重要，这就使他们既成为幸福的源泉又成为深深痛苦的源泉，他们能给我们带来巨大的欢乐，但是也会深深地伤害到我们。

youdao

Many people have been influenced by the way she dealt with both happiness and sadness.

VOA: special.2009.06.28

Both the sadness and happiness I feel are because of the hurricane sadness about the devastation and joy from the day I get to spend with my kids.

FORBES: Can You Admit What You're Feeling?