extemporaneousadj.
英 ɪk,stempə'reɪnɪəs; ek- | 美
中文adj. 即席的，临时的；无准备的；不用讲稿的；善于即席讲话的
词根词源
extemporaneous (adj.)"made, done, procured, or furnished \\'at the time,\\'" hence "unpremeditated," 1650s, from Medieval Latin extemporaneus, from Latin ex tempore (see extempore). Earlier was extemporal (1560s); extemporanean (1620s). Related: Extemporaneously; extemporaneousness.
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