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Jyutping dak1 sam1 jing3 sau2
Pinyin dé xīn yìng shǒu

Definitions (CC-CEDICT)
  1. lit. what the heart wishes, the hand accomplishes (idiom) skilled at the job
  2. entirely in one's element
  3. going smoothly and easily
Definitions (粵典–words.hk)
  1. 語句
    心點樣​諗​,​手​就​可以​點樣​做
    skilled at the job; entirely in one's element; going smoothly and easily; literally: what the heart wishes, the hand accomplishes
    • 只要你做好準備功夫,到時做起上嚟就會得心應手。
      只要你做好准备功夫,到时做起上嚟就会得心应手。
      zi2 jiu3 nei5 zou6 hou2 zeon2 bei6 gung1 fu1, dou3 si4 zou6 hei2 soeng5 lai4 zau6 wui2 dak1 sam1 jing3 sau2.
      As long as you have done enough preparation work, you can work smoothly and easily.
Definitions (Wiktionary)
  1. adv, idiomatic
    with high proficiency and facility, having perfect control over something
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (粵典–words.hk)
  1. Cantonese
    只要你做好准备功夫,到时做起上嚟就会得心应手。
    只要你做好準備功夫,到時做起上嚟就會得心應手。
    zi2 jiu3 nei5 zou6 hou2 zeon2 bei6 gung1 fu1, dou3 si4 zou6 hei2 soeng5 lai4 zau6 wui2 dak1 sam1 jing3 sau2.
    • As long as you have done enough preparation work, you can work smoothly and easily.