to a hair

介词短语
中文释义
英 /tuː‿ə ˈhɛə/    美 /tu‿ə ˈhɛ(ə)ɹ/

英文释义

介词短语
  1. To a high degree of precision; with the utmost exactness; to a nicety. idiomatic
    — Pand[arus]. Youle remember your brothers excuſe? / Par[is]. To a hayre.

词源

A reference to the very small diameter of a strand of hair: compare hair's breadth.
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