However, the viewer has to sit close to the screen for the effect to work.

然而，为了能够看到3d效果，观众仍然不得不坐在靠近屏幕的位置。

youdao

However, the viewer has to sit close to the screen for the effect to work.

然而，为了能够看到3d效果，观众仍然不得不坐在靠近屏幕的位置。

youdao