basalt
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/bəˈsɔːlt/
🇬🇧
/ˈbæsɔːlt/
A dark-colored, fine-grained rock formed from the slow cooling of lava or magma.
The cliffs were made of solid basalt, which had cooled and hardened over millions of years.
절벽은 수백만 년 동안 식히고 굳어버린 단단한 화강암으로 만들어졌습니다.