1.北极；北极地区
The Arctic is the area of the world around the North Pole. It is extremely cold and there is very little light in winter and very little darkness in summer.

arctic

e.g. ...winter in theArctic.
北极的冬天
e.g. ...Arctic ice.
北极地区的冰

2.极冷的；严寒的
If you describe a place or the weather asarctic, you are emphasizing that it is extremely cold.

e.g. The bathroom, with its ancient facilities, is positivelyarctic.
该浴室设备陈旧，肯定非常寒冷。

1. 北极蓝：环贸中心一期外立面为全隐框玻璃幕墙,采用国际通行的全玻璃大单元结构幕墙设计形式,选用双层中空的美国皮尔.金顿(PILKINGTON)北极蓝(ARCTIC)多功能阳光控制双银低辐射热反射Low-E玻璃.

2. 北极圈：气候类型及气温:因地区而有不同:大部分地区属温和(temperate)气候;夏威夷州及佛罗里达州属热带性(tropical)气候;阿拉斯加州属北极圈(arctic)气候;密西西比河以西之大平原区(great plains)属半干旱性(semiarid)气候;