Rare wave-shaped clouds roll over Virginia

週末のひととき、何か英文に触れましたか？ なんでもいいですから、英語を見て、読み、音読して習慣化しましょう❓

今日の話題は稀な雲の現象です。

軽く流しましょう......

CNN  — A rare formation of clouds wowed onlookers at Virginia's Smith Mountain Lake on Tuesday.
The photo shared on social media captured clouds that look like ocean waves in the sky. These clouds rarely form on windy and unstable days, but when conditions are just right, the natural phenomenon, known as Kelvin-Helmholtz Waves, occurs.