HSK 5
睡眠
shuìmián名
sleep; to sleep; (computing) to enter sleep mode
孩子每天需要八小时睡眠。
Hái zi měi tiān xū yào bā xiǎo shí shuì mián.
A child needs eight hours of sleep each day.
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New in the HSK 3.0 word list at level 5.