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。

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Agile talks about small team sizes with the magic Numbers of 7 plus minus 2. Agile also recommends whole teams.

敏捷认为小团队的人数规模应该是在魔法数字7上加减2。

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The aircraft was subjected to temperatures of minus 65 degrees and plus 120 degrees.

这架飞机经受过零下65度和零上120度的考验。

《柯林斯英汉双解大词典》

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

Sometimes you see this written when you see p orbitals, one is written as plus, one is written in minus.

有时候你们看ｐ轨道时会看到，一个写成正号一个写成负号。

麻省理工公开课 - 化学原理课程节选

Remember, we don't do a one-to-one correlation, because p x and p y are some linear combination of the m plus 1 and m minus 1 orbital.

记住，我们不需要把它们一一对应，因为ｐｘ和ｐｙ轨道是,ｍ等于正负１轨道的线性组合。

麻省理工公开课 - 化学原理课程节选

The survey's overall sampling error is plus or minus 3 percentage points and plus or minus 6 percentage points for the African-Americans sample.

CNN: STORY HIGHLIGHTS

The survey had a margin of error of plus or minus 2.8 percentage points.

NPR: SKorea's Gay Film Maker In News Over Wedding Plans

The margin of error in the poll was plus or minus 3 percentage points.

CNN: Bush: Stay the course on terror war