单词	tavistockite
释义	tavistockite noun tav·​is·​tock·​ite ˈtavəˌstäˌkīt plural -s : a mineral Ca3Al2(PO4)3(OH)3 consisting of a basic calcium aluminum phosphate and occurring in minute white crystals Word History Etymology Tavistock, Devonshire, England + English -ite
随便看	sign-up signa signable signage signages signal signal board signal box signal bridge signal halliard signal halyard signal noise ratio signal number signal oil signal plate signal red signal the retreat signal tower signal-caller signal-callers signaled signaler signalers signalest signaling

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