在医院中的患者发生组织缺氧的原因有很多种，从循环问题到代谢困难。
Hypoxia in hospital patients has various causes, from circulation problems to metabolism difficulties.
引起性能问题的原因有很多种，比如应用程序的实现方式、应用程序的操作系统、系统使用的远程资源，或者所有这些因素的结合。
Performance problems can be related to how an application is implemented, its operating environment, the remote resources that the system USES, or all of these.
人们常以为决策是一个孤立的现象，但从系统的观念看，问题的产生有多种原因，所以决策既有意料中的结果，又有意料外的结果。
People often assume that a decision is an isolated phenomenon. But from a systems point of view, problems have multiple causes, and decisions have intended and unintended consequences.
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