The song was composed extempore.这个曲子是即席作成的.A great poet once wrote an extempore poem here.一位大诗人曾经在这里留题了一首诗....

extempore的音标：extempore的英式发音音标为：[ek'stempəri]extempore的美式发音音标为：[ɪk'stɛmpəri]...

adj.即席的，当场的adv.即席，当场n.即席之作...