For, just as the colour of an iridescent feather changes with the Angle you look at it, so the colour of a droplet can be changed by rotating it.

原因在于，就如随着你观察的角度改变，变换羽毛的颜色会发生改变一样，微滴的颜色也因旋转发生改变。

youdao

For, just as the colour of an iridescent feather changes with the Angle you look at it, so the colour of a droplet can be changed by rotating it.

原因在于，就如随着你观察的角度改变，变换羽毛的颜色会发生改变一样，微滴的颜色也因旋转发生改变。

youdao