LOOK closely at a time-zone map of the western hemisphere. You will see a small area carved out of the Atlantic zone off the east coast of Canada.

仔细看看西半球的时区图，你会发现有一小块从加拿大东海岸大西洋中挖出来的地区。

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In fact, sky-watchers were snapping pictures of auroras as far south as Oslo, Lake Manitoba in Canada, and Lake Superior (map) in the United States.

事实上，天空观测者在较南的奥斯陆、加拿大马尼托巴湖和美国的苏必利尔湖都拍摄到了极光的照片。

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This map shows concentrations of carbon monoxide-one component of smoke-from June 23-28 across Canada and the northern United States.

上图显示了6月23日至28日间遍布加拿大和美国北部的一氧化碳——烟尘的组成成分之一——的浓度。

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This map shows concentrations of carbon monoxide-one component of smoke-from June 23-28 across Canada and the northern United States.

上图显示了6月23日至28日间遍布加拿大和美国北部的一氧化碳——烟尘的组成成分之一——的浓度。

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