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单词	coltan
释义	coltan noun col·​tan ˈkōl-ˌtan  : a dull black ore that consists of a mixture of columbite and tantalite and is a minor source of tantalum Example Sentences Recent Examples on the Web The Afro-futurist musical, set in a hacker village made of computer parts, follows a miner who flees his life of digging up coltan after his brother’s tragic death. David Sims, The Atlantic, 3 Aug. 2022 Bolívar, a sprawling state in Venezuela’s southeast, is home to steel and aluminum plants and large deposits of gold, diamonds and coltan. New York Times, 19 Nov. 2021 Some mines are run by warlords who work with rogue members of the Congolese army to smuggle the coltan out. The Economist, 23 Jan. 2021 But mining operations are destroying these forests to extract minerals such as coltan—used in making electronics like cell phones and laptops. National Geographic, 21 Apr. 2020 Then there were the critical minerals in their phones and computers—the coltan, cobalt, and lithium—that are mined in Afghanistan and the Democratic Republic of the Congo. Eliza Griswold, The New Yorker, 23 Mar. 2020 Congo produces some two-thirds of the world’s cobalt, a mineral key in the production of lithium-ion batteries that power laptops and electric cars, as well as coltan, copper, tantalum and tin, all used in modern electronics. Gabriele Steinhauser, WSJ, 30 Dec. 2018 The Western lowland gorilla's native habitat in Africa is shrinking due in part to mining of a metallic ore called coltan, a key ingredient in manufacturing batteries, including the kind found in our phones. Jennifer Larino, NOLA.com, 1 Mar. 2018 Wakanda’s entire Vibranium economy is based on Congo’s exclusive rights to the rare mineral coltan (which is in basically EVERY cellphone). Jason Johnson, The Root, 22 Jan. 2018 See More Word History Etymology International Scientific Vocabulary columbo-tantalite, from columbite + -o- + tantalite First Known Use 1999, in the meaning defined above
随便看	palaeonemertine Palaeonemertini palaeoniscid Palaeoniscidae palaeoniscoid Palaeoniscum Palaeoniscus palaeontographies palaeontography palaeontologies palaeontologists palaeontologyes palaeontologys palaeopathologies palaeopathologist palaeopathologists palaeopathology palaeopathologyes palaeopathologys palaeophile palaeophilist Palaeophis Palaeopithecus Palaeoptera palaeopterous

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