mindexmethanal./meth-uh-nal/US // ˈmɛθ əˌnæl //UK // (ˈmɛθəˌnæl) //甲醛,甲烷,甲醇,甲乙醛Definitionsn.noun · 名词1. Chemistry.›formaldehyde. Level 4More words in m →