捉墨魚 [－－鱼]

Jyutping zuk1 mak6 jyu4
Pinyin zhuō mò yú

Definitions (粵典–words.hk)
  1. 動詞、俚語、術語
    的士​用語​，​墨魚​被​捕捉​果陣會​噴出​墨汁​，​比喻​抽查​汽車​排氣​，​噴出​過量​黑​煙​嘅​車​會​被​檢​控​。​而​排氣​檢查​站​就​叫​墨魚​站
    (taxi driver jargon) to check the exhaust emissions of a vehicle. Literally: to catch cuttlefish

捉墨魚 [－－鱼]

Jyutping zuk1 mak6 jyu4
Pinyin zhuō mó4yu

Definitions (CC-CANTO)
  1. literally: to fish for cuttlefish; to catch out vehicles with exhaust emissions that is over the acceptable limit [colloquial]