单词	alumina porcelain
释义	alumina porcelain noun : a porcelain composed chiefly of alumina and used in spark plugs Word History First Known Use 1882, in the meaning defined above
随便看	seal press seal record seal ring seal someone's fate seal the deal seal-top spoon sealable sealabs sealant sealants sealch sealchs sealed sealed bank bill sealed book sealed in sealed off sealed orders sealed verdict sealed will sealed-beam sealer sealer's finger sealeries sealers

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