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| 晴天乱流 (せいてん・らんりゅう) | |||
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| 晴天乱気流 (せいてん・らんきりゅう) | |||
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| Turbulence encountered in air where no clouds are present. This expression is commonly applied to high- level turbulence associated with wind shear WS. CAT is often encountered in the vicinity of the jet stream. | |||
| clear-air: 4 phrases in 1 subject |
| General | 4 |