The eye can accommodate itself to seeing objects at different distances.

眼睛能自动调观看远近不同的景物。

In micrographics, a measure of the remoteness of the copy from the original material, the first microfilm representation being the first generation microfilm.

在缩微照相技术中，量副本离原始料远近的程。第一次缩微后的胶片为第一代缩微胶片。