Depending on the state of the program, a mouse down might start drawing a line, or it might select an object.

根据程序的状态，鼠标按下事件，应该开始绘制一条直线，或者选中一个对象。

youdao

In China, better select condition, better discipline and so far, fly down a line, there is a lot of high technology there, believe it or not.

中国目前有更好的挑选条件、更好的纪律，很多的高科技，不管你信不信。

youdao

In China, better select condition, better discipline and so far, fly down a line, there is a lot of high technology there, believe it or not.

中国目前有更好的挑选条件、更好的纪律，很多的高科技，不管你信不信。

youdao