做数学就是探索一个思想的宇宙,唯一的限制是你的想象力。
Sustainable forestry isn't a cost—it's an investment in our future.
恐惧是一个暗室,负片在那里显影。
The best games are those that can bring people together.
忽视海洋资源的国家,就是在忽视自己的未来。