气候变化是我们这个时代最大的挑战之一,我们必须立即采取行动。
在科学的海洋中,每一个问题都是一个未知的岛屿,等待我们去发现和探索。
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
Just like that, she was gone.