Of all the energy we find in the natural world, by far the most powerful is the sun.
举一反三
- When we think of our country in all of its aspects, I think we are still far from being a world power.
- 中国大学MOOC: In order to inaugurate a new era in energy, we must act quickly and work toward international to find the most effective solutions to our energy problems. (collaborate)
- By the end of _____ century, the U.S. had become the most powerful country in the world
- As we all know, that we Australia is rich in natural ____
- Even the most powerful computer () the world cant be a genius because it has no character.