变化无常 (biàn huā) — constantly changing, volatile, unpredictable

定義

A 成语 meaning 'always changing, never the same' — used for weather, mood, or markets that keep shifting without warning. Stresses instability over mere change.

idiom
constantly changingvolatileunpredictable

例文

  • 变化无常
    Zuì jìn tiān qì biàn huā, yí huì r xià yǔ yí huì r qíng tiān.
    The weather has been constantly changing lately, raining one moment and sunny the next.
  • 变化无常
    Tā de qíng xù biàn huā, hěn nán zhī dào tā zài xiǎng shén me.
    His mood is so volatile that it's hard to know what he's thinking.
  • 变化无常
    Shì chǎng biàn huā, tóu zī xū yào jǐn shèn.
    The market is constantly changing; investing requires caution.

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