1、Seven minus three is four. 七减去三等于四。2、One minus one is zero 1减1等于0。3、The margin of error was plus o

相关介绍

1、Seven minus three is four.

七减去三等于四。

2、One minus one is zero

1减1等于0。

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

误差幅度在三个百分点左右。