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Jyutping baai2 hoi1
Pinyin bǎi kāi

Definitions (Wiktionary)
  1. verb, figuratively, formal, literally
    to unfold; to open up; to spread out
    (syn.) 展开, 扩张, 攤, 張開, 舒展, 展開, 张开, 摊, 舒张, 舒張, 伸展开, 擴張, 伸展開, 伸展