When an assertion fails, the script name and line number will be output.
当assertion失败时，将会输出脚本名和行数。
When an assertion fails, a message dialog box displays the name of the source file and the line number of the assertion.
当断言失败时，将有一个消息对话框显示断言的源文件的名称和行号。
If that condition does not hold true, the assertion fails, execution of your program is interrupted, and the assertion Failed dialog box appears.
如果该条件不为真，则断言失败，中断程序的执行，并显示“断言失败”对话框。
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