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Jyutping hoeng2 dung6
Pinyin xiǎng dòng

Definitions (Wiktionary)
  1. noun
    sound of something astir
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)

響動 [响动]

Jyutping
Pinyin xiǎng dòng

Definitions (CC-CEDICT)
  1. sound coming from sth (typically sth not immediately visible)
  2. also pr. [xiang3 dong5]