WORD BY WORD
limestone
英/lˈaɪmstəʊn/
美/ˈɫaɪmˌstoʊn/
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01n.
石灰石
a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals
WORD BY WORD
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a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals