The arithmetic of modular forms is a key to understanding the deeper structures of number theory.
天然气的未来在于其适应能力,而不仅仅是当前的主导地位。
Responsible mining is not an option, it's an obligation we owe to our planet and future generations.
负责任的采矿不是一种选择,而是我们对地球和后代应尽的义务。
The two most important days in your life are the day you are born and the day you find out why.