[N-COUNT 可数名词]化石 A fossil is the hard remains of a prehistoric animal or plant that are found inside a rock.
Oxford
fos·sil/ˈfɒsl; NAmEˈfɑːsl/noun1the remains of an animal or a plant which have become hard and turned into rock 化石◆fossils over two million years old两百多万年的化石2( informal,disapproving) an old person, especially one who is unable to accept new ideas or adapt to changes 老人;(尤指)老顽固,老古董fossilfossilsfos·sil/ˈfɒsl; NAmEˈfɑːsl/
1fossil (1)an animal or plant that lived many thousands of years ago and that has been preserved, or the shape of one of these animals or plants that has been preserved in rock: fossils of early reptiles Marine sponges have a long fossil record (=their development has been recorded over a long period).2informal an insulting word for an old person
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