自然光的用法和樣例：
例句
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頭髮的自然光澤來自它自身的護髮素：油脂，它含有蠟和脂肪，還含有抗感染的自然抗菌劑。油脂含量過多會導致油性發質，相反，油脂含量過少則會導致乾性發質。
Hair's natural shine is supplied by its own conditioner, sebum, an oil composed of waxes and fats and also containing a natural antiseptic that helps fight infection. Too much sebum results in greasy hair and conversely, too little sebum makes dry hair.
