"dark horse" was first used by an English Tory (wikipedia)
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送交者: Wood 于 2008-07-29, 12:58:12:
回答: 底狗 由 yell 于 2008-07-29, 12:27:48:
the word "dark" here means "Of whom or which nothing is generally known; about whose powers, etc., the public are ‘in the dark’. " (OED)
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