Objects in mirror are bigger than they appear.

应该理解为“物体比它们在镱子中所展现的要大”。

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Also look out for haunted objects, including a piano that mysteriously plays a single chord and a mirror that appears clean but in photos often reveals handprints, smudges, and faces.

同样需要小心那些被鬼魂纠缠的物体，包括神秘地奏响了一根和弦的钢琴，和一面看起来很干净但是在照片中却常常显示出手印、污迹和脸的镜子。

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To paraphrase the warning car companies engrave on side-view mirrors - objects in the mirror are farther away than they appear.

我引用汽车公司刻在后视镜上面的话——镜子里面的东西总是比看起来的要远。

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With the glass retracted, it's tough to see objects in your rearview mirror.

FORBES: Test Drives

The ultimate aim is for Nico to use a mirror to interpret objects around it, in the same way as humans use a rear-view mirror to look for cars.

BBC: Robot learns to recognise itself in mirror