第7章介绍寻址、可靠通讯、元数据交换、安全等其它相关高级概念。
Chapter 7 covers advanced concepts related to addressing, reliable messaging, metadata exchange, security, and more.
然而，如果您在程序中从未使用过“导线”（wire）来在模块间进行通讯的话，您也许需要快速浏览一下第 2 章。
You may want to scan Chapter 2, however, if you've never used "wires" in your programs to communicate between blocks.
这里的图片是，铃木章，他是三个被授予2010年诺贝尔化学奖的科学家的一员。美国联合通讯社图片。
Akira Suzuki, pictured here, is one of the trio of chemists to claim the 2010 Nobel Prize for Chemistry. AP photo.
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