A plug-in need not explicitly specify a custom Plugin class; if none is specified, the run time platform provides a default plug-in run time object that ignores all life cycle requests.
插件不需要显式地指定一个自定义plugin类，如果没有指定这样的类，那么运行时平台将提供一个忽略所有生命周期请求的缺省插件运行时对象。
He is able to pick her out (the run-time object), even though her hair is now short and dyed blond.
即使现在女孩的头发剪短了，并染成了金色，他仍然能够指出这个女孩(运行时对象)。
He is able to pick her out (the run-time object), even though her hair is now short and dyed blond.
即使现在女孩的头发剪短了，并染成了金色，他仍然能够指出这个女孩(运行时对象)。
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