目标是探讨动态回归系数随时间变化的规律，并从数理统计学角度研究如何对其作出合理的推断。

The objective is to inquire into the change rule of the dynamic parameters and study how to make a reasonable statistical inference about it.

考证古代文学作品系年的关键在于正确理解作品的原意，然后结合作者的行踪、交游作出合理的推断。

The key of age confirming of literature writings is that comprehend their original intention and then make proper deduction according as the writer's whereabouts and company.

一个合理的推断是Apple会等到备受期待的touchscreen tablet发布时介绍它新开发的处理器。

It’s reasonable to infer Apple would wait to introduce its newly developed mobile processor with the release of a highly anticipated touchscreen tablet.