变化无常 (biàn huà wú cháng) — constantly changing, volatile, unpredictable

Definition

Examples

• 最近天气变化无常，一会儿下雨一会儿晴天。
  Zuì jìn tiān qì biàn huà wú cháng, yí huì r xià yǔ yí huì r qíng tiān.
  The weather has been constantly changing lately, raining one moment and sunny the next.
• 他的情绪变化无常，很难知道他在想什么。
  Tā de qíng xù biàn huà wú cháng, hěn nán zhī dào tā zài xiǎng shén me.
  His mood is so volatile that it's hard to know what he's thinking.
• 市场变化无常，投资需要谨慎。
  Shì chǎng biàn huà wú cháng, tóu zī xū yào jǐn shèn.
  The market is constantly changing; investing requires caution.