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Jyutping buk1 buk1 tiu3
Pinyin bǔ bǔ tiào

Definitions (Wiktionary)
  1. verb, onomatopoeic
    to beat with a thumping

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Jyutping buk4 buk2 tiu3
Pinyin bo bo tiào

Definitions (粵典–words.hk)
  1. 動詞
    心跳​得​好​犀利
    pounding, beating, heart pounding
    • 頭先睇鬼片,我嚇到個心卜卜跳。
      头先睇鬼片,我吓到个心卜卜跳。
      tau4 sin1 tai2 gwai2 pin2, ngo5 haak3 dou3 go3 sam1 buk4 buk2 tiu3.
      I've just watched a horror film. I was scared that my heart was pounding.
  2. 參看
    伏伏跳

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Jyutping buk6 buk6 tiu3
Pinyin bo bo tiào

Definitions (粵典–words.hk)
  1. 動詞
    心跳​得​好​犀利
    pounding, beating, heart pounding
    • 頭先睇鬼片,我嚇到個心卜卜跳。
      头先睇鬼片,我吓到个心卜卜跳。
      tau4 sin1 tai2 gwai2 pin2, ngo5 haak3 dou3 go3 sam1 buk4 buk2 tiu3.
      I've just watched a horror film. I was scared that my heart was pounding.
  2. 參看
    伏伏跳
Examples (粵典–words.hk)
  1. Cantonese
    我个心吓到卜卜跳。
    我個心嚇到卜卜跳。
    ngo5 go3 sam1 haak3 dou3 buk4 buk2 tiu3.
    • I was frightened and my heart raced.
  2. Cantonese
    头先睇鬼片,我吓到个心卜卜跳。
    頭先睇鬼片,我嚇到個心卜卜跳。
    tau4 sin1 tai2 gwai2 pin2, ngo5 haak3 dou3 go3 sam1 buk4 buk2 tiu3.
    • I've just watched a horror film. I was scared that my heart was pounding.