熬夜是他生病的罪魁祸首。 熬夜是他生病的罪魁禍首。 熬夜是他生病的罪魁禍首。

Staying up late is the main reason he got sick.

Simplified
熬夜是他生病的罪魁祸首。
Traditional (Taiwan)
熬夜是他生病的罪魁禍首。
Pinyin
Áoyè shì tā shēngbìng de zuìkuíhuòshǒu.
Bopomofo
ㄠˊ ㄧㄝˋ ㄕˋ ㄊㄚ ㄕㄥ ㄅㄧㄥˋ ˙ㄉㄜ ㄗㄨㄟˋ ㄎㄨㄟˊ ㄏㄨㄛˋ ㄕㄡˇ。

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

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