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laurasia是什么意思

laurasia

美[lɔː'reɪʃə]  英[lɔː'reɪʃə]
n.  [地]劳亚古大陆(板块学说中包括亚、欧、北美的古大陆)

英英释义

Noun
  1. a hypothetical continent that (according to plate tectonic theory) broke up later into North America and Europe and Asia
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