cloud of volcanic ash（火山灰云）是什么意思？音标发音+图解场景

火山灰云 /ˈklaʊd ɒv vɒlkˈanɪk ˈaʃ/ n

English: cloud of volcanic ash · 火山灰云

释义：Ash is formed of particles less than 2 mm in diameter; it is composed of pulverized magma and ground rock.

这个词出现在以下图解场景（1）