noun🔗Share积雨云，雷雨云 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. "看到天空中正在形成巨大的积雨云，我们取消了学校的野餐，因为这种云通常会带来雷雨。weathernatureChat with AIVocabulary GamePractice Reading
