noun🔗Share積乱雲A cloud, with a tall structure and a flat base, that is often associated with thunderstorms."We canceled the school picnic when we saw a large cumulonimbus forming in the sky, because those clouds often bring thunderstorms. "空に大きな積乱雲が形成されているのを見て、それらの雲はしばしば雷雨をもたらすため、私たちは学校のピクニックを中止しました。weathernatureChat with AIVocabulary GamePractice Reading
