太阳发出的光线普照地球，然后以热的形式向太空散回。
It's the sun's light that bathes the Earth and then gets sent back towards space as heat.
当你晚回宾馆或汽车旅馆时，要检查你的周围，站在光线较好的地方，使用主要通道。
When returning to your hotel or motel late in evening, be aware of your surroundings, stay in well-lighted areas , and use the main entrance.
最好是激光棒内举行块内的冷却降温的同时，反映杆泵光线导入棒回形成了一个光学腔。
The guided pumping light is absorbed by the laser active material, as it propagates and moves around in the optical waveguide core in a fixed direction.
最好是激光棒内举行块内的冷却降温的同时，反映杆泵光线导入棒回形成了一个光学腔。
The guided pumping light is absorbed by the laser active material, as it propagates and moves around in the optical waveguide core in a fixed direction.
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