nemesis

nemesis
[ˈnɛmɪsɪs]
(pl. nemeses -siːz)
  1. (一般作 one's nemesis)the inescapable or implacable agent of someone's or something's downfall, especially when deserved
    给以报应者,复仇者;处罚者
    I am either your saviour or your nemesis.
    我或是你的救星,或是给你带来报应。
    ■a downfall caused by such an agent
    天谴;报应
    one risks nemesis by uttering such words.
    说这样的话可能会遭报应的。
    ■(常作 Nemesis)retributive justice
    公正的惩罚
    Nemesis is notoriously slow.
    众所周知,公正的惩罚总是姗姗来迟。
语源
  1. late 16th cent.: Greek, literally retribution', from nemein 'give what is due'
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