valuable oil
definitions
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A substance derived from plants, animals, or minerals that possesses high economic, medicinal, or culinary worth.ja: 価値のある油
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A metaphorical resource or lubricant that facilitates smooth operation or progress within a system or organization.ja: 貴重な潤滑剤
examples
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The company invests heavily in the extraction of valuable oil from the seabed.
その企業は海底からの価値のある油の抽出に多額の投資を行っている。
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Diplomacy acted as the valuable oil that kept the gears of international relations turning.
外交は国際関係の歯車を回し続ける貴重な潤滑剤として機能した。