打盹儿 (dǎ dǔn): Take a nap / Doze off (Verb) — Meaning & Stroke Order

Were you dozing off just now and missed the key points the teacher explained?

Even though he only slept for four hours last night, he resolutely did not doze off while working.

During the long journey, he dozed off against the car window and missed the scenery along the way.

Don't doze off on the sofa; be careful not to catch a cold. Go back to your room and sleep properly.