变幻莫测
biàn huàn mò cè
changeable and unpredictable
Character by character
变biàn
change
change
幻huàn
transform
transform
莫mò
cannot
cannot
测cè
fathom
fathom
Example
山里的天气变幻莫测，上山之前一定要看好天气预报。
Mountain weather is unpredictable, so always check the forecast before you go up.
Tone: neutral.
Usage and origin
莫 is classical for 不能 or 没有. Used of weather, markets and situations: 股市变幻莫测, 国际形势变幻莫测. Compare 风云变幻.
Learn this in Lesson 112 · HSK 7–9: 台风来了 (Typhoon warning: a weather report)
A dialogue, a reading, word cards with audio and a drill that uses it, in Learn Chinese with Bao. The first lessons of every level are free.
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