kě​kuò​zhǎn​biāo​jì​yǔ​yán

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  1. adjectiveauxiliary
    worth
    worth; worthy of; used as a prefix to mean "-able" or "-worthy"
  2. to expand
    to expand, spread, or extend outward
  3. mark
    a sign, symbol, or notation used for identification
  4. language system
    a system of symbols used for communication in specific fields, such as computer programming, mathematics, or the arts