How often does severe clear air turbulence occur over tropical oceans?

热带海洋晴空发生强气流涡动的频率如何？

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The flight, which hit severe clear air turbulence at 29,000 feet, 420 nautical miles southeast of St.

这架飞机遇上激烈的晴空乱流的时候，位于距纽芬兰圣约翰机场东南420海里、2.9万英尺的高空。

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If the irritation is severe enough, a sleeping person will arouse, clear the airway, then resume breathing and likely return to sleep.

如果刺激足够剧烈，睡着的人就会醒来并清理气道，恢复呼吸，并很可能再度陷入睡眠中。

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People with severe symptoms appeared to gain more clear-cut benefit - but this might be more down to the fact that they were less likely to respond to the placebo pill, rather than to respond positively to the drugs.

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The approaches steer clear of physical pain or severe mental anguish and do not involve touching a prisoner.

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But these don't necessarily offer clear guidance on how frequent and severe lawsuits could be.

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