If a = b and b = c it follows that a = c.

设a = b，b = c，则a = c。

《牛津词典》

The different types are designated by the letters A, B and C.

不同的类型分别用字母A、B和C标明。

《牛津词典》

He got a 'C' in Chemistry and a 'B' in English.

他化学考试得中，英语考试得良。

《牛津词典》

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

VOA: special.2009.03.05

So basically we're saying yes, we can go from point a to point c without ever going through point b.

所以我们说的是我们可以从,ａ点不经过ｂ点而到达ｃ点。

麻省理工公开课 - 化学原理课程节选

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

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

Dame Ruth chaired a recent inquiry into drugs law which recommended that cannabis be downgraded from a class B to a class C drug, though she said Mr Straw did not appear ready to do so.

BBC: You are in: UK Politics

If A equals B and B equals C then A too must equal C.

FORBES: You Call It Inflation, I Call It Theft