单词	crystal
释义	crystalcrystal /ˈkrɪstəl/ ●●○ noun Etymology ETYMOLOGYcrystal Origin: 1000-1100 Old French cristal, from Latin crystallum, from Greek krystallos ice, crystal 1 [uncountable] clear glass that is of very high quality:  The table was set with the best china and crystal. crystal goblets2[countable] science, chemistry a solid substance that has atoms arranged in an ordered repeating pattern:  ice crystals copper sulfate crystals3[countable, uncountable] rock that is clear like ice, or a piece of this4[countable] the clear cover on a clock or watch5[uncountable] informal the illegal drug methamphetamine SYN crystal meth [Origin: 1000–1100 Old French cristal, from Latin crystallum, from Greek krystallos ice, crystal]
随便看	matter-of-factly matter-of-factness Matthew Matthew, Saint matting mattress maturation mature maturely maturity matzo matériel maudlin Maugham, Somerset Maui maul Mauna Kea Mauna Loa maunder Maundy Thursday Maupassant, Guy de Mauriac, François Mauritania Mauritanian Mauritian

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