HSK 5
不良
bùliáng形
bad; harmful; unhealthy; (of a device, connection, material etc) defective; faulty
不要养成熬夜的不良习惯。
Bú yào yǎng chéng áo yè de bù liáng xí guàn.
Do not develop the bad habit of staying up late.
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New in the HSK 3.0 word list at level 5.