函数范围 meaning in English

function scope

Choose a size large enough that the peak of the psf of the stars will be within the aperture , but small enough to resolve close pairs of stars
设置足够大的值，从而可以使恒星的点扩展函数范围在此半径之内，单也要小到足以区分密近双星。
Function objects to names in the example , but that is not strictly necessary . we could instead simply nest the definitions . for readability we do it this way ; but also because
我们定义的每一个闭包函数都携带了函数范围内定义的任何值，然后将这些值绑定到函数对象的全局范围。