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Jyutping lou5 maa5 sik1 tou4
Pinyin lǎo mǎ shì tú

Definitions (Wiktionary)
  1. phrase, idiomatic
    an experienced worker knows what to do; an old hand knows the ropes

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Jyutping lou5 maa5 sik1 tou4
Pinyin lǎo mǎ shí tú

Definitions (CC-CEDICT)
  1. an old horse knows the way (idiom); an experienced worker knows what to do
  2. an old hand knows the ropes
Definitions (Wiktionary)
  1. phrase, idiomatic
    an experienced worker knows what to do; an old hand knows the ropes
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)