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Jyutping laak1 laak1 sing1
Pinyin lei lei shēng

Definitions (Wiktionary)
  1. adj, Cantonese, ideophonic
    fluent (in a foreign language)

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Jyutping laak1 laak1 seng1
Pinyin lei lei shēng

Definitions (粵典–words.hk)
  1. 形容詞
    形容​講外語​講得​好​流暢
    fluent in a foreign language
    • 唔好睇佢個款好似冇讀過書噉,佢講英文嘞嘞聲㗎。
      唔好睇佢个款好似冇读过书噉,佢讲英文嘞嘞声㗎。
      m4 hou2 tai2 keoi5 go3 fun2 hou2 ci5 mou5 duk6 gwo3 syu1 gam2, keoi5 gong2 jing1 man2 laak1 laak1 seng1 gaa3.
      He may not seem to have received good education, judging from his outfit. In fact, he speaks fluent English.
  2. 參看
    lak lak 聲

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Jyutping laak4 laak2 seng1
Pinyin lē1le shēng

Definitions (CC-CANTO)
  1. to be very fluent in a language (usually to describe a foreign language) [colloquial]
Examples (粵典–words.hk)
  1. Cantonese
    唔好睇佢个款好似冇读过书噉,佢讲英文嘞嘞声㗎。
    唔好睇佢個款好似冇讀過書噉,佢講英文嘞嘞聲㗎。
    m4 hou2 tai2 keoi5 go3 fun2 hou2 ci5 mou5 duk6 gwo3 syu1 gam2, keoi5 gong2 jing1 man2 laak1 laak1 seng1 gaa3.
    • He may not seem to have received good education, judging from his outfit. In fact, he speaks fluent English.