名词
中文翻译：光束展宽同义词
同义词：
['broadening beam', 'beam expansion']
例句：
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1. The beam of light from the flashlight is shining through the window.
手电筒的光束透过窗户。
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2. The beam of sunlight warms the earth's surface.
阳光的光束温暖了地球的表面。
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3.The beam of light illuminated the room.
一束光照亮了房间。