二叠纪盆地将在未来几十年内保持美国石油生产的皇冠地位。
The Permian Basin will remain the crown jewel of U.S. oil production for decades to come.
The best way to learn mathematics is to do mathematics.
Human beings are not born once and for all on the day their mothers give birth to them, but life obliges them over and over again to give birth to themselves.
I don't need a crown to be a queen.
