Therefore the regular expression A*B will match the strings AB, AAB, AAAB, or any other string starting with an A and ending with a single B.

因此，正则表达式 A*B 将与字符串 AB 、 AAB 、 AAAB 或任何其它以 A 开头并以单个 B 为结尾的字符串相匹配。

youdao

You still have a root node, A, which points to a node B to the left and another node B to the right.

您仍然有一个根节点 A，它从左边指向一个节点 B，从右边指向另一个节点 B。

youdao

B a metaphor is what we call a poetic lie. Everybody knows a is not b.

隐喻就是我们所指的诗化的谎言，人人都知道A不是。

youdao

Getting a grade like a B-plus or a C-minus adds or subtracts a few tenths of a point.

VOA: special.2009.03.05

a You know that what will happen is that heat will flow from a to b from b to c and from a to c. That's common-sense.

你知道会发生的是热量从流向,从流向,以及从流向。

麻省理工公开课 - 热力学与动力学课程节选

who're interested, (a) in improving their own Spanish- speaking skills, and (b) helping out the community.

如果他们对这个活动感兴趣，想要提高自己的西班牙语水平，同时愿意为社区尽一份力，

帮助多文化的家庭 - SpeakingMax英语口语达人

To get the same yield, an investor would have to buy a lower-rated bond, such as a 15-year double-A-rated bond or a triple-B-rated bond maturing in eight years.

WSJ: Are High-Yield Munis Headed for a Fall?

Meanwhile, Tunisia snatched a 2-2 draw in Nigeria thanks to a 90th-minute Oussama Darragi goal in a top-of-the-table Group B clash, to maintain a two-point advantage with two matches left.

CNN: Essien on target as Ghana reach World Cup

It wasn't a particularly impressive event -- just a single shot in a tiny room supplemented with a bit of b-roll, including a top contender for one of the dorkiest promo videos in the history of the gaming industry.

ENGADGET: Xbox SmartGlass: did Microsoft just render the Wii U controller obsolete?