composing/kəmˈpoʊz/动词作曲；创作（乐曲、诗歌）；著（书）He composed this poem for his wife.他为妻子写了这首诗。空气主要由氮和氧构成。Air is composed mainly of nitrogen and oxygen.空气主要由氮和氧构成。排版想跟读，去练习
