mousedown造句怎么写

2、因此，当影像树的矩形接收到mousedown事件时，我把CSS 的fill属*改成稍微亮一点的颜*——比如粉红*。

1、Then it's time to ask for listening for various mouse events (mousedown, mouseup, and click) on the shadow tree's rectangle — you'll see how to react to these later.