If the file doesn't exist or there is an explicit request to refresh it, the code gets the list of details for all the AMIs at Amazon.

如果该文件不存在或者有明确请求要求刷新文件，则代码获取存储在Amazon上的所有ami的详细列表。

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To suspend a process in such a way that it can be continued. A process may be directly frozen by an explicit request of its superior process or indirectly frozen because its superior has been frozen.

挂起一个进程的执行，需要时可以再继续的处理动作，一个进程可以被其上级进程的一个明确的请求直接冻结，也可以因其上级进程已被冻结而冻结。

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After being created, widgets live until an explicit destroy request is executed.

创建后，小部件将一直存在，直到执行一个显式的销毁请求。

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At the other extreme, only in 0.7% of cases does the doctor act with no explicit request.

ECONOMIST: Euthanasia in the Netherlands: No rush to death | The

Chinese regulators often request changes to films to remove sexually explicit scenes, violence and other topics deemed inappropriate for the audience in China - which is now the second-biggest movie market in the world.

BBC: Django Unchained opening cancelled in China