I'm a problem that'll never be solved.
我是一个永远解决不了的问题。
物体的加速度与所受的合外力成正比,与物体的质量成反比。加速度的方向与合力的方向相同。
"The free, exploring mind of the individual human is the most valuable thing in the world."
Teamwork is the yeast that makes the business rise.
诗是一种在世界中生活的方式,而不仅仅是观察它。