Sleep apnea

He didn't feel the earthquake because he was in a deep sleep then.（他沒有感覺到地震，因為他當時睡得很沉。） sleepy 的意...

你是否总是将胃塞得满满，吃得饱饱？有消化不良的问题或是饭后容易犯困的毛病？那可能就是暴饮暴食的恶果！ Go to sleep only when you start to feel sleepy...

Feeling abnormally sleepy or tired during the day is commonly known as drowsiness. Drowsiness may...

fall asleep的同義字fall asleep = being in sleep feel sleepy = still awake but can easily start sleepi...