Obsidian is a volcanic glass, typically black or banded, with shiny, curved surfaces when broken, formed by the rapid cooling of lava.
黑曜石是一种火山玻璃，通常为黑色或带状，破碎时表面会呈现出光亮弯曲的特点，它是火山熔岩快速冷却形成的。
| Expression | 黑曜岩火山玻璃，一般为黑色，带状，摔碎时色泽光亮，表面变曲，由火山熔岩迅速凝而成 |
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| Meaning | A usually black or banded, hard volcanic glass that displays shiny, curved surfaces when fractured and is formed by rapid cooling of lava. |
| Reading | hēi yào yán huǒshān bōli yībān wéi hēisè dài zhuàng shuāi suì shí sèzé guāngliàng biǎomiàn biàn qū yóu huǒshān róngyán xùnsù níng ér chéng |
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