You can enclose one or more characters in square brackets to create a set; any character in the set will match.

可以使用方括号将一个或多个字符括起来，以创建一个集合，该集合中的任何字符都可以匹配。

youdao

Get trendy in tones of gold and silver with this set of rings that sparkle with bezel-set, square-cut clear crystals displayed half way around.

这套戒指缀以包边镶嵌、若隐若现的方形切割透明水晶，让您散发时尚别致的银色与金色魅力。

youdao

The two rivals were set to square off in a Madison, Wis.

FORBES: Links 7 Nov: Apple Loses One Patent Suit, Opens Yet Another

That's because the San Francisco 49ers are set to square off against the Baltimore Ravens this Sunday during the Super Bowl, of course.

BBC: Business

The men are now set to square off July 31 in the runoff with the winner considered a decided favorite in the general election.

WSJ: Ted Cruz, David Dewhurst Head for a Runoff