The primary reason they're left out is that they don't make sense inside a PDF file, which is the most common result of formatting-object conversion.
不介绍它们的主要原因是它们在PD F文件中没有意义,这是格式化对象转换最常见的结果。
The reason for this is simple: After service formation, the conversion of parameters to and from the native format can take a considerable amount of time.
之所以这样做,其原因很简单:形成服务后,参数与本机格式之间的转换可能会需要相当长的时间。
The reason for these warnings is that a type conversion will be executed in runtime.
这些警告的原因是将在运行时中执行类型转换。
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