When viewing the moon with an opticalaid, you may find it better to observe at early dusk or even before sunset.
在光学仪器的帮助下去看月球，你会发现刚入黄昏或更甚在日落前观测到效果更佳。
2
In optical design using Computer-Aid-Design, Simulation, and Optimization (CADSO), it is customary to use various kinds of non-diffraction-based merit function.
在光学系统计算机辅助设计、模拟与最优化工作中，广泛采用了非衍射基价值函数的各种评价函数。
3
A lot of those movies have catered to the very glossy, ethereal, optical illusion that is ballet, and we ripped the Band-Aid off.