待执行的字符串操作可能导致不同的输出，取决于计算字符所使用的字符串长度单元。
The string operation to be performed may result in different outputs, depending on the string length unit that is used for counting the characters.
向另一个程序提供一个待召意图，就相当于你将授予另一个程序以权力，任由它像你的程序一样来执行相应的操作。
By giving another application a PendingIntent, you're granting the other application the right to perform the operation you have specified as if the application was your application.
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