ple·si·o·saur /ˈplisiəˌsɔr, zi-/
蛇頸龍
Ple·si·o·saur n. Paleon. One of the Plesiosauria.
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plesiosaur
n : extinct marine reptile with a small head on a long neck a
short tail and four paddle-shaped limbs; of the Jurassic
and Cretaceous [syn: plesiosaurus]