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单词 pine-needle oil
释义 pine-needle oil
noun
: an essential oil obtained from the needles and twigs of various pines or other conifers: as
 a. : the colorless or yellowish bitter aromatic oil from the mugho pine used chiefly in medicine as an expectorant and inhalant
 b. : the oil from the Siberian fir used chiefly in insecticides, soaps, and perfumes and as an inhalant
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