(Note: the slash is the choice operator, i.e. the additive is either an two operands separated by a plus character or just the result of the multitive rule).

(注意：这个斜杠是选择操作符，意思是，additive规则要么是两个操作数和之间的加号，要么是multitive规则的结果)。

youdao

(Note: the slash is the choice operator, i.e. the additive is either an two operands separated by a plus character or just the result of the multitive rule).

(注意：这个斜杠是选择操作符，意思是，additive规则要么是两个操作数和之间的加号，要么是multitive规则的结果)。

youdao