| 单词 | obsidian |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔conchoidal〕Of, relating to, or being a surface characterized by smooth, shell-like convexities and concavities, as on fractured obsidian.贝壳状的：（属于）表面光滑且呈贝壳状凸凹特点的、或与之有关的，如黑曜石碎块美国传统〔knap〕To break or chip (stone) with sharp blows, as in shaping flint or obsidian into tools.敲碎：用重击来撞碎或凿碎（石头），如把燧石或黑曜岩石制成工具美国传统〔spherulite〕A small, usually spheroid body consisting of radiating crystals, found in obsidian and other glassy lava rocks.球粒：由放射状结晶构成的通常为球状的小粒，常见于黑曜岩及其他玻璃质的火山岩中美国传统 |
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