酣睡 (hān shuì): นอนหลับอย่างสบาย

The baby lay in the cradle, breathing evenly, sleeping soundly; even the thunder outside didn't wake him.

He had worked for twenty hours straight; as soon as he hit the bed he fell into a deep sleep, and didn't hear the alarm clock ring several times.

The kitten curled up in the corner of the sofa and slept soundly all afternoon, only lazily opening its eyes when the smell of dinner drifted over.

After a night of sound sleep, his headache had completely vanished, and he started the new day's work full of energy.