“Laurentian Shield”的概念、定义、翻译、参考文献-科学参考

单词	Laurentian Shield
释义	Laurentian Shield [lȯ`ren·chǝn `shēld] ^GEOLOGY A Precambrian plateau extending over half of Canada from Labrador southwest along Hudson Bay and northwest to the Arctic Ocean. Also known as Canadian Shield; Laurentian Plateau.
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