A problem is in P if it can be solved quickly by a computer, and in NP if a solution can be verified quickly.
公平竞争是足球的基石，没有它，比赛就失去了灵魂。
You are not defined by your past. You are prepared by your past.
政府、企业和科学家之间的合作是保护海洋的关键。
Innovation requires both courage and perseverance.
Your work is going to fill a large part of your life, and the only way to be truly satisfied is to do what you believe is great work.
"The most important thing in a book is the story. The illustrations are there to support and enhance the story, not to overshadow it."