在编写脚本时，一种良好的实践就是控制脚本的退出；这要考虑脚本处理中出现的失败条件。
When writing scripts, it is good practice to have a controlled exit from your script; this allows for failed conditions within the script processing.
管理实际项目需要实践的领导力，而在实际项目条件下应用和执行这些理念是相对困难的。
Managing real projects requires practice leadership where applying and executing these ideas under game conditions is relatively difficult.
从实践上来看，功能需求是根据数据结构和先决/后决条件来表达的。
In practical terms, you express the functional requirements in terms of a data structure and pre- as well as post-conditions.
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