gindexgeocorona./jee-oh-kuh-roh-nuh/US // ˌdʒi oʊ kəˈroʊ nə //地铁,地震,地铁站,地质学家Definitionsn.noun · 名词1.›a belt of ionized hydrogen surrounding the earth at the outer limit of the exosphere.Level 4More words in g →