Thus, the subpattern ((?x) edu | com | info) (notice the spaces between the alternation operators, added for legibility) is the same as (edu|com|info).
因而，子模式 ((?x)edu |com |info)（请注意备用操作符之间的空格，这些空格是为了易读性而添加的）与 (edu|com|info)相同。
Thus, the subpattern ((?x) edu | com | info) (notice the spaces between the alternation operators, added for legibility) is the same as (edu|com|info).
因而，子模式 ((?x)edu |com |info)（请注意备用操作符之间的空格，这些空格是为了易读性而添加的）与 (edu|com|info)相同。
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