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。

youdao

Walk into every corner of China through the logistics of X-kicks. com.

通过新新球鞋商城物流可以销往中国任何一个角落。

youdao

Cappex.com -- c-a-p-p-e-x -- matches students with colleges and universities.

VOA: special.2009.02.26

If a guy died in X-COm I just reloaded a save from a turn or two back.

FORBES: Connect

GF-X.com, which is creating a marketplace on the Internet for trading airfreight capacity.

ECONOMIST: Europe��s start-up stampede

It is popular with some eBay users (X.com claims that a tenth of eBay transactions are settled through its service).

ECONOMIST: A survey of online finance