HSK 7-9
变换
biànhuàn动
to transform; to convert; to vary; to alternate
灯光随着音乐不断变换。
Dēng guāng suí zhe yīn yuè bú duàn biàn huàn.
The lighting keeps changing with the music.
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Appears across levels (7-9) in the HSK 3.0 word list.