The other two concentrated areas of carbon monoxide are in the northern Great Plains and the northeastern United States.

另外两个一氧化碳的聚集区域是北部平原与美国的东北部。

youdao

Comparing the observational results of the two cruises, it is found that the northern trough and two high value areas of dynamic potential change obviously.

比较两个航次的观测结果，我们发现，北部低槽和两个重力势高值区变化明显。

youdao

Operations in a northern corridor - one of two vast areas where the plane might have ended its journey - have been called off, he added.

他补充道，在飞机可能终止行程的两大海域之一的北部走廊地带的搜救行动已经被叫停。

youdao

Mr.Thaksin,who remains in exile in the face of a two year jail sentence for corruption, maintains support from the northern rural areas as well as among the poor and low income groups due to populist economic policies while in office.

VOA: standard.2010.03.20

The rebels have effectively split the West African nation in two, and northern areas remain volatile and tense, preventing aid agencies from accessing displaced people, the United Nations refugee agency said.

CNN: Mali's president steps down

The rebels effectively split the West African nation in two, and northern areas remained volatile and tense, preventing aid agencies from accessing displaced people, the United Nations refugee agency said Thursday.

CNN: Mali coup leader agrees to return power

The rebels have effectively split the West African nation in two, and northern areas remain volatile and tense, preventing aid agencies from accessing displaced people, the United Nations refugee agency said Thursday.

CNN: Grave conditions reported as rebels capture northern Mali