But as it turned out, some of the particles were deflected at large angles and sometimes almost straight backward.

但事实证明， 一些粒子以大角度偏转， 有时几乎笔直地向后偏转。

They knew a photon wouldn’t fling the pairs apart at that large an angle, but couldn’t explain the anomaly with anything else known to physics.

他们知道光子不会以那么大的角度将对分开，但无法用物理学已知的任何其他东西来解释这种异常。

The rays on the very top and bottom of the lens are bent at a larger angle towards the central axis than the rays near the center, which stay almost parallel.

透镜顶部和底部的光线比中心附近的光线偏向中心轴的角度更大，后者保持大致平行。