Message in Chinese (Simplified) (中文(简体))![](/img/flags/zh-Hans.png)
没有为类型“<var>Y</var>”和“<var>Z</var>”定义二进制运算符 <var>X</var>。
Unlocalized message![](/img/flags/en.png)
The binary operator <var>X</var> is not defined for the types '<var>Y</var>' and '<var>Z</var>'.
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