We’re able to perceive depth by using both binocular and monocular visual cues.

我们通过双视和单视两种视觉暗示，来观察深。

Fred as you know is monocular. Who's gonna throw him his ping pong ball?

但弗雷德是一只眼 谁来给它抛球？

For that we look to our monocular cues to help us determine the scale and distance of

需要单视觉暗示来确定物品的大小和距离。