a profound sleep的用法和样例：
- I soon dropped into a profound sleep.
- I lay in a profound sleep, by the force of that soporiferous medicine infused into my liquor.
- Being more pivotal, the earth's rotation made us days and nights so that we were able to have a profound sleep as well as we worked hard.
- In two minutes his eyelids closed, his chin fell on his breast, he gave a deep sigh, and instantly was in a profound sleep, breathing loudly.
- He fell into a profound sleep.
- The rape of the countryside had a profound ravage on them.