3-point 是必须由数字+横杠+point组成?

3-point 是必须由数字+横杠+point组成? point Point::Point(Point & 求助英语数字念法比如说8.59million 是念eight point five nine还是 eight point point at&point to point for point是什么意思 9 point 字体 是多大 set point是啥意思? new start point 是新起点 Point[] points;Point是类名 那“[]”是啥意思啊!指 0.25是zero point two five还是zero point twenty freezing point为什么是ing不是frozen point?