- 1
To let yourself sleep later than usual, usually because you can — a weekend, a holiday, no alarm. It is a happy, relaxed word. No object: "I slept in until ten." Note the difference from "oversleep", which is sleeping late by accident and being late for something.
睡晚一點、多睡一會兒（故意的）
原始詞典資料2 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。
sleep inverb/ˌsliːp ˈɪn/
- 1
To sleep late; to go on sleeping past one's customary or planned hour.
- On a rainy Saturday, after a busy week at work, he closed the curtains and decided to sleep in.
- 2
Used other than figuratively or idiomatically: see sleep, in.
- She didn't come home last night — her bed hasn't been slept in.
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。