erratic

erratic
[ɪˈratɪk]
adjective
  1. not even or regular in pattern or movement; unpredictable
    不稳定的;捉摸不定的;无规律的
    her breathing was erratic.
    她呼吸不均匀。
noun
  1. (亦作 erratic block 或 boulder)(Geology)a rock or boulder that differs from the surrounding rock and is believed to have been brought from a distance by glacial action
    (地质)漂块,漂砾
派生
erratically
adverb
erraticism
noun
语源
  1. late Middle English: from Old French erratique, from Latin erraticus, from errare 'to stray, err'
英语宝典
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