However, even if the fuel is left for too long it changes into another form of oil that fetches a fairly high market price as a medicinal substance.

然而，即使是这些燃料被放置的时间久了后变成了另一种油，它们仍有很高的市场价值，可用于医药。

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The essential oil , naringin, pigment, pectin and many kinds of activated ingredients in the inside and outside of the pomelo peel have good value for edible and medicinal purposes.

柚子的内外皮中含有香精油、柚皮甙、黄色素和果胶等多种活性成分，具有较高的食用和药用价值。

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Classified by natural products and utilization they can be divided into 6 types: medicinal plants, oil plants, fibre plants, colophony and balata plants, perfume plants and amylum plants.

按其产物和用途可分为6类：药用植物、油料植物、纤维植物、树脂和树胶植物、芳香油植物以及淀粉植物等。

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The plants grow wild along highways and in other spots in the U.S. They are also considered ornamental by some gardeners and are cultivated for medicinal castor oil and other products.

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