长期来看,风险与收益相关,但短期内未必如此。
Mathematics is not just about numbers and equations; it's about understanding the patterns and structures that underlie everything in the universe.
在每一个突出的岬角,每一处弯曲的海滩,每一粒沙子中,都有地球的故事。
I'm not a whisper, I'm a shout.