As they leave the lens and move back through the air, the rays are angled slightly more toward that central axis, due to the lens’s curvature.

当它们离开镜头并通过空气返回时，由于镜头的曲率，光线会稍微偏向中心轴。

As they leave the lens and move back through the air, the rays are angled slightly more toward that central axis, due to the lens's curvature.

当它离开透镜并再次穿过空气时，由于透镜的曲率，光线的角度会稍微偏离这个中心轴。