Laurentian Highlands /Ca·na·di·an Shield英kəˈneɪdiːən美kəˈnediənAHDkə-nāʹdē-ən短语¹¹⁴⁴⁶⁷⁺⁴ 基本英英近义反义 Canadian Shield Noun: a large plateau that occupies more than 40% of the land area of Canada; it extends from the Great Lakes northward to the Arctic Ocean近义词Canadian shield加拿大地盾