It's a terrible thing to be alone—yes it is—but it's also terrible to be with people and still feel alone.
最重要的是享受你的运动。如果你不享受它,你就无法做到最好。
高分子物质的性质不仅取决于其构建单元的性质,还取决于这些单元在空间中的排列方式。
Certification standards are more than paperwork—they're our promise to the planet.