ichthyosaur
noun [ C ] uk/ˈɪk.θi.ə.sɔːr/ us/ˈɪk.θi.ə.sɔːr/
鱼龙(生活在2.5亿到9千万年前的一种海洋爬行动物)
a type of reptile that lived in the sea, that existed from about 250 million to 90 million years ago
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