give or take表示增减...而无大变化，允许有小误差，出入至多...，相差不到...

【例句】
It'll take about three weeks, give or take a day or so.
这要花大约三周时间，出入不过一天左右。

The results turned out to be exactly the same, give or take one percent.
结果证明完全一样，误差不超过百分之一。