打瞌睡：指意识逐渐模糊并进入睡眠状态。
nod off // [ nodding nodded nods ]
动词词组 If you nod off, you fall asleep, especially when you had not intended to. 打瞌睡
The judge appeared to nod off yesterday while a witness was being cross-examined.
昨天当一名证人被盘问时，法官好像在打瞌睡。
change from a waking to a sleeping state
同义词： fall asleep / dope off / flake out / drift off / drop off / doze off / drowse off
... nod off：打盹，打瞌睡，犯困。 insecure: 缺乏安全感的，不自信的。 be insecure in bed:通俗译为在床上翻来覆去。 ...
我发现到过去数年，政丆府官员会在司长宣读《预算案》时打瞌睡（nod off）。我从没见过「长毛梁丆国雄打瞌睡，因为他从没试过出席整场的演辞。
... in all likelihood: 十有八九;极有可能 nod off: 睡着;打盹 NHS: =National Health Service(英国)国家医疗服务体系 ...
Don't let yon dog nod off.
不要让那条狗打盹。
The student began to nod off during math class.
那学生上数学课的时候开始打盹。
Now a study has found it really does help people nod off if it is milked from a cow at night.
现在一项研究发现，如果是晚上从奶牛身上挤的奶，确实能帮助人们打盹。
You lean one way until shooting pains stir you awake, then lean the other way till you nod off again.
Sleeping bags and, blankets and steaming cups of tea were handed out and a few people managed to nod off.
When the Volvo senses that its driver is about to nod off, it sets off a gong and some dashboard lights.