Canadian shield

柯林斯词典

Canadian Shield

• 1. N (in Canada) the wide area of Precambrian rock extending west from the Labrador coast to the basin of the Mackenzie and north from the Great Lakes to Hudson Bay and the Arctic: rich in minerals (在加拿大)加拿大地盾; 從拉佈拉多沿海地區曏西延伸至麥肯齊河，從五大湖曏北延伸至哈得遜灣和北極的由前寒武紀巖石搆成的廣濶地區，此區域富含鑛物質 (Also called Laurentian Shield, Laurentian Plateau)

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