英语翻译

问题描述:

英语翻译
if the position picked by mouse is in the circle of which the center is picking target and radius is tolerance,system admits that it is the point;otherwise it is failure.

假如(用户用)鼠标选取的点位于以选取目标为中心、容差为半径的圆内,那么系统将判定(用户成功)点中了目标;否则会判定为失败.挺顺的就是radius is tolerance有点不明白 啥叫容差为半径