单词 | biostrome |
释义 | bi·o·strome ![]() n. A stratified rock deposit, such as coal or carbonate, formed from the remains of sedentary organisms such as trees or corals, crinoids, and brachiopods. [BIO— + Greek strōma, bed, mattress; see ster-2 in the Appendix of Indo-European roots.] |
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