I think so. The question is how much they are related ?

来源: -worldance- 于 2018-08-14 14:40:11 [] [旧帖] [给我悄悄话] 本文已被阅读： 次 (105 bytes)

Very hard to determine and even more hard for quantitative studies, too many factors involved.

加跟帖：

当前帖子已经过期归档，不能加跟帖！