现在的问题是，怎样将欣赏距离和人们的视觉灵敏度联系起来。

The question, then, is how to relate viewing distance to a person's visual acuity.

youdao

现在的问题是，怎样将欣赏距离和人们的视觉灵敏度联系起来。

The question, then, is how to relate viewing distance to a person's visual acuity.

youdao