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Jyutping gei1 bun2 pun4
Pinyin jī běn pán

Definitions (Wiktionary)
  1. noun
    base

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Jyutping gei1 bun2 pun2
Pinyin jī běn pán

Definitions (粵典–words.hk)
  1. 名詞
    某一政黨​或​派​別​嘅​長​期​忠​實​支持者
    (politics)base
    • 呢區居民多數都係泛民主派嘅基本盤。
      呢区居民多数都系泛民主派嘅基本盘。
      nei1 keoi1 geoi1 man4 do1 sou3 dou1 hai6 faan3 man4 zyu2 paai1 ge3 gei1 bun2 pun2.
      Residents in this area are mostly supporters of the pro-democracy camp.

基本盤 [--盘]

Jyutping
Pinyin jī běn pán

Definitions (CC-CEDICT)
  1. (political party's) voter base
  2. (musician's) fan base
  3. (a business's) customer base
  4. the funds necessary for a venture
  5. foundation on which sth's existence depends
  6. bedrock (in the figurative sense)
Examples (粵典–words.hk)
  1. Cantonese
    呢区居民多数都系泛民主派嘅基本盘。
    呢區居民多數都係泛民主派嘅基本盤。
    nei1 keoi1 geoi1 man4 do1 sou3 dou1 hai6 faan3 man4 zyu2 paai1 ge3 gei1 bun2 pun2.
    • Residents in this area are mostly supporters of the pro-democracy camp.