| 释义 |
light rays短语³³⁹⁴⁸
基本例句
光线
A range in relation to an optical system, such as a camera lens, representing distances great enough thatlight raysreflected from objects within the range may be regarded as parallel.无限远与光学系统有关的一个范围，表示距离是如此之远，以至于从在这一距离的物体上反射回来的光可以视为平行光线 |