晴空湍流;
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?
We are getting into clear air turbulence emergency descent to 8000 m.
我们进入晴空颠簸,紧急下降到8000米.
Suddenly she was scared to death of clear air turbulence.
她突然之间被晴空乱流吓死了.
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