Do you have an introductory paragraph that sets up the problem, clearly states your thesis, and outlines your ensuing discussion?
是否有引言段落说清楚问题、晰阐明主题、及概述接下来的讨论?
About halfway through chapter 2 is the introductory paragraph for the chapter explaining how it will detail how to use WCF.
在第2章中,作者又用了一半的篇幅阐释了如何使用WCF的详细细节。
On second thoughts, that introductory paragraph needs a little clarification.
斟酌再三之后,本人有必要对上文段落作出小小澄清。