Even in this nascent stage, metadata could could serve as a kind of "training wheels" (as Bruce Tate has put it; see Resources) for learning about aspect-oriented programming.
The purpose of this chapter is to set the stage for learning about computer science and programming, a process that you will begin in earnest in Chapter 2.
本章主要逐步的学习了关于计算机科学及编程（关于编程将在第二章中开始认真的学习）。
3
The concurrent nature of the processing and data transfer is what gives two-stage pipelining its edge in SPE programming.