optical telescope
释义
光学望远镜：一种利用透镜或反射镜收集和聚焦光线，从而观察远处天体的仪器。
例句
1·This is the most advanced optical telescope in the world.
这是世界上最先进的光学望远镜。
2·Construction of world's biggest optical telescope has been approved.
建设世界上最大的光学望远镜的计划已获批准。
3·A typical optical telescope might have a diameter a few million times the wavelength of the light it is collecting.
一个典型的光学望远镜或许有一个可以收集几百万倍光波的直径。
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