一个人为了保护自己的身体而做的事情，被视为合法行为。
I’m not a role model, I’m just a person trying to figure it out.
We must plan for future development with a global perspective and actively participate in international energy governance.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
数学不是关于数字、方程、计算或算法的：它是关于理解的。