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	hard-heartedness hard-hitting hardiness Harding, Warren hard labor hard-line hardliner hardly hard money hardness hard-nosed hard of hearing hard palate hard-pressed hard rock hardscrabble hard sell hardship hardtack hardtop hard up hardware hard-wired hardwood hard-working

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