嘞嘞聲 (laak1 laak1 seng1) — used to describe someone fluent in a foreign language in Cantonese
laakˉ¹嘞laakˉ¹嘞sengˉ¹聲简 嘞嘞声
Mandarin Pinyin: lei5 lei5 sheng1
Meaning of 嘞嘞聲
nounused to describe someone fluent in a foreign language
nounto be very fluent in a language (usually to describe a foreign language) [colloquial]