光源的用法和樣例：
例句
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光源光源，如蠟燭
A source of light, as a candle. -
耳鏡，檢耳鏡檢查耳內部（尤其是中耳）的儀器，主要包括一個放大鏡和光源
An instrument for examining the interior of the ear, especially the eardrum, consisting essentially of a magnifying lens and a light. -
光分解，光解作用由光或其它光源引起的化學分解
Chemical decomposition induced by light or other radiant energy.
