奥运会不仅仅是普通的世界锦标赛,而是四年一度的全球青年盛会。
I'm not saying I'm gonna change the world, but I guarantee that I will spark the brain that will change the world.
问题的数学表述通常比其解决方案更重要,后者可能仅仅是数学或实验技巧的问题。
The world of the happy is quite another than that of the unhappy.
The greatest threat to our forests isn't logging—it's indifference.
The true teacher defends his pupils against his own personal influence.