变化莫测 unpredictable
Explanation
形容变化很多，无法预测。
Describes something with many changes that are unpredictable.
Origin Story
话说唐朝时期，有一位名叫李白的诗仙，他性格豪放不羁，才华横溢，然而他的命运却如同这变化莫测的天气一般，充满了难以预料的转折。他的一生充满了辉煌与落魄，得意与失意，仕途的坎坷和人生的飘荡，都如同这变化莫测的云卷云舒，难以捉摸。有时候他春风得意，被皇帝召见，在宫廷里吟诗作赋，享受着荣华富贵。而有时候他又失意落魄，四处漂泊，寄人篱下，过着颠沛流离的生活，只能寄情于山水之间，在酒杯中寻求慰藉。他的一生，如同一幅波澜壮阔的画卷，充满了精彩和无奈，变化莫测，令人叹为观止。
In the Tang Dynasty, there was a famous poet named Li Bai. His character was free and unconventional, his talent extraordinary, yet his fate was as unpredictable as the weather, full of unexpected twists and turns. His life was marked by highs and lows, success and failure. His erratic career and itinerant existence were as unpredictable as the changing clouds in the sky. Sometimes he was successful and was received by the emperor, composed poems at court, and enjoyed wealth and honor. But sometimes he was unhappy and impoverished, wandered around, lived in exile, and led a life of poverty and hardship. He could only find solace in nature and wine. His life was like a great painting, full of brilliance and despair, unpredictable and admirable.
Usage
用来形容事物变化迅速且难以预测。
Used to describe things that change rapidly and are unpredictable.
Examples
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这天气变化莫测，一会儿晴空万里，一会儿倾盆大雨。
zhè tiānqì biànhuà mò cè, yīhuǐ'er qíngkōng wànlǐ, yīhuǐ'er qīngpén dàyǔ
The weather is erratic; one moment it's sunny, the next it's pouring with rain.
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股市变化莫测，风险极高，投资需谨慎。
gǔshì biànhuà mò cè, fēngxiǎn jí gāo, tóuzī xū jǐnxìn
The stock market is unpredictable and very risky; investments should be made with caution.
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他的心情变化莫测，让人难以捉摸。
tā de xīnqíng biànhuà mò cè, ràng rén nányǐ zhuōmó
His mood is unpredictable and hard to understand.