direct light的用法和样例：
例句
- These models apply to the project of measuring attitude that adopts the principle of collimated light.
适用于准直光等形式的测姿方案。 - Direct light is better for reading than diffuse light.
直射光比漫射光更有利于阅读。 - These direct light downward to reduce light pollution at night.
这些向下的直射光减少了夜间的光污染。
