B You can say a minus B is a plus minus B and we know how to add vectors and we know what minus B is.

可以把A减b看作a加负，我们既知道怎么做加法，也知道负b是什么。

youdao

So basically if we think of buckets and pipes, that's a very thin pipe connecting the bucket for A and B, B so we drip from A to B, C then we have this very fat pipe connecting B and C.

大体上如果我们想象桶和管子，连接A桶和B桶的管子很细，所以液体从A滴入，然后我们有很粗的管子连接B和。

youdao

This irreflexivity can be used to set up an equivalence relation—that is, for Key s a and b , if comp(a, b) is false and comp(b, a) is false , then a and b must be equivalent.

这个反自反性质可以用来建立一个等价关系(equivalence relation)—也就是，对于Keys a和b来说，如果comp(a,b)为false并且comp(b,a)也为false，那么我们就说a和b是等价的。

youdao

An A is worth four points, a B three points, a C two points and a D one 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

b It's pretty simple zeroth law says that if a and b it doesn't exactly say that but it implies this.

它很简单，第零定律指出如果a和,这不是第零定律的原话,但其意义是这样的。

麻省理工公开课 - 热力学与动力学课程节选

Second, there was a negative divergence between the slow (19-39 day) MACD and the price chart from A to B. (That is, the price at B is higher than at A, but the MACD is lower at B than it was at A.) The lower high at C compared to B was confirmed by a lower MACD high at C than at B.

FORBES: Banking Breakdown

Situation B: PhD student B copies a summary of a previously published academic article from a third, published paper who summarised the same article.

FORBES: I Am an Academic Fraud

The third button says Barb, B-A-R-B, delegate for Muskie.

NPR: With White House Bogged Down By Scandal, GOP Looks For Boost