As discussed, rule expressions may take on a wide range of forms, and a key design decision is the identification of which rules are best expressed in which form.
规则表达式可以采用各种格式，一项关键的设计决策就是决定哪些规则最适合用哪种形式表达。
As discussed, rule expressions may take on a wide range of forms, and a key design decision is the identification of which rules are best expressed in which form.
规则表达式可以采用各种格式，一项关键的设计决策就是决定哪些规则最适合用哪种形式表达。
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