Chinese

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one; single; a
one; single; a; (before verbs) as soon as, once; (before a noun) entire (family, etc.)
 
letter; symbol; character
letter; symbol; character; word
 
not; no change; easy; simple
simp. and trad.
(一字不易)

Pronunciation

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Idiom

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一字不易

  1. to not change a single word