求翻译：一些事，只配当回忆。一些人，只能做过客。既不回头，何必不忘。既然无缘，何必誓言。这个世界那么脏，谁有资格说悲伤。是什么意思？

Something, with only when the memories. Some people can only do passing. Neither turn back, why did not forget. Since no chance, why oath. This world is so dirty, and who has qualified to say that sad.

Some of the things that only when memory allocation. Some of the people, we can only do so much. Do not turn back, why should we not forget about it. Since it had bypassed the oath, so why should they be. This world so dirty, who is qualified to say that sorrow.

Some matters, only match when recollects.Some people, only can be a guest.Also does not turn head, why does not forget.Since does not have the good fortune, why pledge.This world that internal organs, who has the qualifications to say sadly.

Something, only when the memory. Some people, can only do passing. Neither turn back, why not forget. Since not, why the oath. This world so dirty that who is qualified to say sorrow.

Something, with only when the memories. Some people can only do passing. Neither turn back, why did not forget. Since no chance, why oath. This world is so dirty, and who has qualified to say that sad.