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
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。
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