我微笑背后的忧伤，你不必知道。

The sadness behind my smile, you don't need to know.

youdao

我的微笑背后是一颗受伤的心。

Behind my smile is a hurting heart.

youdao

在她的微笑背后，是一个你永远不会知道的故事。

Behind sher smile, is a story you would never understand.

youdao

在她的微笑背后，是一个你永远不会知道的故事。

Behind her smile, is a story you would never understand.

youdao

我的微笑背后是一颗受伤的心。此刻的我，正在笑容背后一点点瓦解。

Behind my smile is a hurting heart. Behind my laugh, I'm falling apart.

youdao

她只是微微笑，但我知道笑容背后是什么。

She was just a smile, but I know what is behind the smile.

youdao

微笑的背后，谁会知道伤痛。

Behind the smiles, who will know the pain.

youdao

微笑的背后隐藏了多少坚强。

Numbers of strong hidden behind the smile.

youdao

在每一滴悲伤的眼泪背后，都有一个充满回忆的微笑。

Behind every tear of sorrow, there's a smile of memories.

youdao

在每一滴悲伤的眼泪背后，都有一个充满回忆的微笑。

Behind every tear of sorrow, there's a smile of memories.

youdao