Binary logic in XPath expressions is a bit more complex than simply true and false.
XPath表达式中的二进制逻辑比简单的true和false要稍微复杂一点。
Jonathan has studied binary code and logic; he has his own computer at home.
乔纳森以前学过二进制编码和逻辑学，家里有一台自己的计算机。
Jonathan has studied binary code and logic; he has his own computer at home.
乔纳森以前学过二进制编码和逻辑学，家里有一台自己的计算机。
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