乌云密布是暴雨的预兆。 烏雲密布是暴雨的預兆。 烏雲密布是暴雨的預兆。

Dark clouds gathering are an omen of a heavy rainstorm.

Simplified
乌云密布是暴雨的预兆。
Traditional (Taiwan)
烏雲密布是暴雨的預兆。
Pinyin
Wūyún mìbù shì bàoyǔ de yùzhào.
Bopomofo
ㄨ ㄩㄣˊ ㄇㄧˋ ㄅㄨˋ ㄕˋ ㄅㄠˋ ㄩˇ ˙ㄉㄜ ㄩˋ ㄓㄠˋ。

Written with HSK 7-9 vocabulary, at CEFR level C1.

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