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Jyutping dang1 tin1
Pinyin dēng tiān

Definitions (Wiktionary)
  1. verb
    to climb up to the sky; (of a spacecraft) to enter space
Examples (粵典–words.hk)
  1. Cantonese
    你连基本功都未打好就想一步登天?
    你連基本功都未打好就想一步登天?
    nei5 lin4 gei1 bun2 gung1 dou1 mei6 daa2 hou2 zau6 soeng2 jat1 bou6 dang1 tin1?
    • Are you trying to reach the sky in a single bound? You can't even do the basics well.
  2. Cantonese
    慢慢嚟,做嘢唔可能一步登天嘅。
    慢慢嚟,做嘢唔可能一步登天嘅。
    maan6 maan5 lei4, zou6 je5 m4 ho2 nang4 jat1 bou6 dang1 tin1 ge3.
    • Relax, nothing can be done in one step.