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变调 [bian4 diao4]
☊
tone sandhi ☊
/sandhi tonal/
☊
/sandhi tonal/
☊
变调 [bian4 diao4] ☊ 
tone sandhi ☊ 
/sandhi tonal/ ☊ /sandhi tonal/ ☊ 变调 [bian4 diao4] ☊ tone sandhi ☊ /sandhi tonal/ ☊ /sandhi tonal/ ☊