In the deaf culture of North America, many listeners show applause not by clapping their hands but by waving them in the air.

在北美的聋人文化中，许多听众不是通过拍手，而是在空中挥舞双手来表示鼓掌。

youdao

The north pole is warmer than the south and the circulation of air around it is less well contained.

北极比南极温暖，其周围的空气循环更为畅通。

《柯林斯英汉双解大词典》

The weaknesses of North Korea's air force and armored forces, as well as its chronic lack of fuel, mean that their ability to fight south is limited.

朝鲜的空军和装甲部队的弱点，以及长期缺乏燃料，意味着他们南下作战的能力是有限的。

youdao

During spring, warm air moves north and mixes with cold air remaining from winter.

VOA: special.2009.06.09

The Germans,by a remarkable combination of air bombing and heavily armored tanks, have broken through the French defenses north of the Maginot Line, and strong columns of their armored vehicles are ravaging the open country, which for the first day or two was without defenders.

VOA: special.2011.05.12

The International Air Transport Association recently reported that the Asia-Pacific region has eclipsed North America as the largest aviation market.

VOA: standard.2010.02.04

This creates bigger atmospheric waves, pushing warm air north and cold air south.

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One of the most contested issues is the future of the U.S.-run detention facility at the Bagram Air Field north of Kabul.

WSJ: Karzai Provokes Pushback at Home

When the differential is in positive territory (red) it means higher, stronger air over the North Atlantic pushes up on the low-pressure air over the Arctic circle.

FORBES: Snowpocalypse: Explained!