他们说，将两者视为可互相替代或者互相交换的想法都是错误的。
It would be wrong, they say, to see the two types of software as substitutes for another or as interchangeable.
两个图表错误地交换，所以两处参考的文本对应着错误的图表。
Two charts were swapped by mistake, so the text refers in two places to the wrong charts.
XML 验证非常重要，因为我们想要尽快捕获信息交换过程中的错误。
XML validation is important because you want to catch errors as early as possible in the information interchange process.
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