D or — delete: This command deletes a rule from the chain, either by specifying the rule to match with -d or by specifying the rule's position number in the chain.

d或——delete：通过用- d指定要匹配的规则或者指定规则在链中的位置编号，该命令从链中删除该规则。

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D or — delete: This command deletes a rule from the chain, either by specifying the rule to match with -d or by specifying the rule's position number in the chain.

d或——delete：通过用- d指定要匹配的规则或者指定规则在链中的位置编号，该命令从链中删除该规则。

youdao