The margin of error was plus or minus three percentage points.

误差幅度在三个百分点左右。

《牛津词典》

It is the value plus or minus something.

而是这个值加上或减去某个东西。

youdao

Harris Interactive said the results have a sampling error of plus or minus 1.2 percentage points.

哈里斯互动表示该调查结果会有正负1.2个百分点的采样误差。

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

Anything where you're actually keeping track of something like a score that's having a variable that you increment -- plus, plus, or decrement, minus, minus, using the appropriate puzzle piece could certainly be compelling.

你需要保存像分数这样的事物时,你就需要一个变量,它可以自加，++，或者自减,要使用正确的拼图。

哈佛公开课 - 计算机科学课程节选

The poll of Democratic voters has a sampling error of plus-or-minus 5 percentage points.

CNN: Poll: Bush down, Clark up

CNN's poll has a sampling error of plus-or-minus 3 percentage points for most questions.

CNN: Bush's approval ratings slide to new low

When split into parties, the numbers have a sampling error of plus-or-minus 5.5 points.

CNN: SHARE THIS