微笑背后是不为人知的承受。。。。的翻译：Behind the smile is not known can sustain .... 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Behind the smile is unknown to bear. . . .

Behind the smile is not known can sustain ....

Behind the smile is unknown withstanding.。。。

Smile is behind the bear is unknown. . . .

Behind the smile is not known can sustain ....