If it was not outlandish of Mr Obama to award himself that solid B-plus at the end of 2009, what has changed?

如果奥巴马在2009年给自己评级B +的事没有什么好奇怪的话，那么什么东西发生改变了？

youdao

I got B plus (B+) in the test.

我考试得了个B+。

《牛津词典》

For A or B to happen, the probability amplitude is alpha plus beta.

如果让A或者B发生时，那么概率幅是alpha加上beta。

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

So the profit is 2 S1 plus S2 plus B S1 S2 minus S1 squared.

利润是2-S1平方

耶鲁公开课 - 博弈论课程节选

The ratings firm lowered Italy's credit rating by one notch to triple-B-plus, three steps above "junk" territory, citing concerns about political uncertainty at a time of economic weakness.

WSJ: Stocks Move Higher, Again

These are known as B, B-bar, B-plus and B-minus.

ECONOMIST: The arrow of time

"Tim Bradley, in almost every respect is a B-plus fighter but he has A-plus determination that makes him special, " said Max Kellerman, a CNN contributor and an analyst for HBO, which like CNN is owned by Time Warner.

CNN: STORY HIGHLIGHTS