Most of the time, good software engineering techniques ensure that this happens automatically, without us having to expend a lot of attention on the issue of object lifetime.
在大多数时候，好的软件工程技术保证这是自动实现的，不用我们对对象生命周期问题花费过多心思。
Only process instances that may need further administrative attention (for example, failed and terminated) are kept, while successfully completed instances are deleted automatically.
只保留可能需要进一步管理的过程实例(例如失败和终止的实例)，而成功完成的实例被自动删除。
When our attention is distracted we carry out highly practised behaviours automatically, occasionally at inappropriate times.
当我们的注意力错乱之时，偶尔在不恰当的时机我们将自发地高度执行老练的行为。
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