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Bedtime is the time of day when you usually go to bed. Parents say ‘It’s bedtime’ to children; a child can have a bedtime of eight o’clock, a bedtime story, or a bedtime routine (wash, teeth, lights out). It names a habit, not a length of sleep and not a time printed on the clock for everyone. Adults use it too, often lightly: ‘That’s past my bedtime’ means ‘later than I like to stay up.’ You can also talk about bedtime as a kind of atmosphere — quiet, lamps on, the day closing — not only the exact minute you lie down.
睡覺時間、就寢時間
原始詞典資料1 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
bedtimenoun/ˈbɛdtaɪm/
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The time or hour at which one retires to bed in order to sleep.
- I read every evening, sometimes late into the night, with the help of kerosene lamps, often secretly, past my bedtime.
- Irregular bedtimes may disrupt healthy brain development in young children, according to a study of intelligence and sleeping habits. Going to bed at a different time each night affected girls more than boys, but both fared worse on mental tasks than children who had a set bedtime, researchers found.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。