如前面所述，表达式节点还支持简单的算术和逻辑表达式。
As mentioned, expression nodes also support simple arithmetic and logical expressions.
公式节点中的运算符和语法同样适用与表达式节点。
The same operators and syntax of the Formula Node apply to the Expression Node.
表达式节点支持包含算术和布尔(真或假逻辑)运算符的简单表达式。
Expression nodes support simple expressions involving arithmetic and Boolean (true or false logic) operators.
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