在您从工作区显式移除签入锁之前，无法签入这些更改。

The changes cannot be checked in until you explicitly remove the check-in lock from the workspace.

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在以前的示例中，并发功能是围绕drop类(有界限的缓冲区)显式编写的。

In the previous examples, the concurrency was explicitly written around the Drop class (the bounded buffer).

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此类模型使他们能够显式描述某些功能区，并展示他们之间的相互关系。

Such a model enables them to explicitly depict certain functional areas and show how they are related to each other.

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