睡懒觉

例句：

1. 1. She decided to sleep in this morning because she had a big exam tomorrow.
   她决定今天早上睡懒觉，因为她明天有一场大考试。
2. 2.The children were allowed to sleep in until 9 o'clock.
   孩子们被允许睡到九点才起床。
3. 3. He usually sleeps in on weekends.
   他通常在周末睡懒觉。