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Jyutping jat1 taam3 gau3 ging2
Pinyin yī tàn jiū jìng

Definitions (粵典–words.hk)
  1. x

一探究竟 [----]

Jyutping
Pinyin yī tàn jiū jìng

Definitions (CC-CEDICT)
  1. to check out
  2. to investigate