在发热材料内其运动方向与材料表面成其它任何角度的光子在碰到表面时都会被反弹回来。

Photons travelling at any other angle within the material are reflected back inside when they reach the surface.

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狄拉克指出唯一的方法就是通过反弹一个光子，并观察它在检测器上的位置和轨迹来测量一个粒子的位置。

Dirac pointed out that one of the only ways to measure a particle's position is by bouncing a photon off of it, and seeing where and how that photon lands on a detector.

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换句话说，从我们身体的任何部分反弹出去并击中镜面的光子只从镜子的一个地方，只从一个角度反射到我们的眼睛。

In other words, photons that bounce off of any part of our bodies and hit the mirror reflect back to our eyes from only one place on the mirror, and at only one Angle.

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