lying down

例句：

1. 1. She lay on the grass and enjoyed the sun.
   她躺在草地上享受阳光。
2. 2. The patient was lying down when the doctor arrived.
   当医生到达时，病人正躺在床上。
3. 3. He lay down to rest after a long day's work.
   他工作了一整天后，躺下休息。