The vocal music sings not only is one kind of high-level thinking activity, also is one kind of complex psychological activity.

声乐演唱既是一种高级的思维活动，也是一种复杂的心理活动。

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For solving this problem, software developers get thinking much of the high-level software design in order to comprehended complex software system easily.

为了解决此问题，人们越来越重视软件的高层分析设计，以增强对软件系统的理解。

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For solving this problem, software developers get thinking much of the high-level software design in order to comprehended complex software system easily.

为了解决此问题，人们越来越重视软件的高层分析设计，以增强对软件系统的理解。

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