The trailing I after the regex statement (which in this case is simply the phrase walmart) signifies that the statement is not case sensitive.

regex语句(本例中为walmart)后面的i表明该语句不区分大小写。

youdao

Call it the Walmart of the web.

这简直就是沃尔玛在互联网上的翻版！

youdao

I have to agree with you about Walmart.

我不得不同意你有关沃尔玛的看法。

youdao

The heads of two major international firms Walmart and Coca-Cola also took part in the group's annual meeting in New York City.

VOA: standard.2009.09.23

He says Walmart is seeking suppliers that follow green practices.

VOA: standard.2010.01.23

Newegg is also increasingly battling store chains like Best Buy, Walmart, Target and Sears.

FORBES: Online Retailer Newegg Mobilizes For Black Friday Sales

The XO Tablet will be available at select Walmart stores and Walmart.com this year.

ENGADGET: OLPC announces XO Tablet coming to select Walmart stores later in 2013

The success of two-year old subscription sample service Birchbox was not lost on Walmart.

FORBES: Walmart's Inside the Box Gamble on Goodie's Gourmet Subscription