When traveling by plane, we often stay strapped in for the whole flight, in case of unexpected rough air.

航空旅行时，我们通常在整个旅程中都系着安全带，以防遇到意外的恶劣气候。

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As the air descends in to the low point of the atmospheric wave, it touches the ocean surface, causing rough waters, visible here as long, dark vertical lines.

在空气下降到大气波的低点时，与海洋的表面相接触，形成了像漫长、黑暗垂直线条那样，明显的惊涛骇浪。

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According to the analysis of the factors in air-raid targets threat ordering, the method that using rough set theory to order targets threat is presented.

通过对影响空袭目标威胁排序因素的分析，针对定性与定量因素并存的情况，提出利用粗糙集理论进行威胁排序的方法。

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Every high-flying market is bound to find patches of rough air, and the charts show a potential decline is in store.

FORBES: The Week Ahead: Time to Buckle Up

Air was rough down at 34, 000 feet.

FORBES: Beating America's Airlines

The ice adds weight to an aircraft, and rough accumulations known as rime interrupt the flow of air over wings.

WSJ: NTSB: Pilot action, icing led to NJ plane crash