像航天飞机这样如此复杂的机器，发生的故障有时并没有那么严重，大多数故障都可以自行排除，或者影响很小。
The reverse side of failures in a machine as complex as the shuttle is that most of them can be worked around, or turn out to be small.
像大多数实践社区一样，会员分布在世界各地；并由多个隔墙或者过道隔开。
Like most Communities of Practice, members are geographically dispersed; disconnected by more than a cubicle wall or a hallway.
所谓RIA，或者说富网络网应用，就是指可以像桌面程序一样操作的网络应用。 在RIA冒出来之前，大多数的网络应用都是静态的页面构建的。
An RIA, or rich internet application, is a web application that behaves like a desktop application. Before RIAs began popping up, most web applications were composed of static pages.
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