乌云
wū​yún HSK6

dark clouds

乌云 烏雲 wū​yún
dark clouds noun
dark or black clouds

乌云是下雨的征兆。

wū​yún shì xià yǔ de zhēng​zhào.

Dark clouds are a sign of rain.

dark hair
(literary) a woman's thick, jet-black hair
threatening situation
(metaphorical) a dangerous, sinister, or ominous situation

Frequency
Movie subtitles
2.18 per million appears in 1% of films
Written text
3.04 per million

Details
HSK 3.0
Level 6

Cross-References

Classifier

Sources
Frequency data
SUBTLEX-CHBCC Corpus (BLCU)