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Jyutping si3 hong4
Pinyin shì háng

Definitions (CC-CEDICT)
  1. test flight (of aircraft)
  2. sea trial (of ship)
Definitions (Wiktionary)
  1. verb
    to make a trial voyage; to shake down
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)