And this is the sideview mirror.

这是侧视镜。

So, because they're on the sides, you can call them your " side mirrors" or your " sideview mirrors" because they show you the sides.

所以，因为它们在侧面，所以您可以称它们为“后视镜” 或“侧视镜” ，因为它们向您展示侧面。