plumbago
英
[plʌm'beɪgəʊ]
美
[plʌm'beɪgoʊ]
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Noun:
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used as a lubricant and as a moderator in nuclear reactors
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any plumbaginaceous plant of the genus Plumbago
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用作名词 (n.)
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Later Thoreau converted the factory to producing plumbago, used to ink typesetting machines.
随后梭罗让工厂转换生产适用于油墨排版机的石墨粉。
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以上内容独家创作,受著作权保护,侵权必究
海词词典,十七年品牌