plus or minus used to say that a number may be more or less by a certain amount左右，大约:•There may be a variation of plus or minus 5% in the prices that are quoted.报价可能会有 5% 左右的变动。plus or ˈminusused when the number mentioned may actually be more or less by a particular amount或多或少；左右；大约give or takeThe margin of error was plus or minus three percentage points.误差幅度在三个百分点左右。 |