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 alternation of motion is ever proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.
尝试一种方法是常识。如果失败了，坦率地承认并尝试另一种方法。但最重要的是，尝试一些事情。
The future energy structure will be diversified, and the coal industry needs to find its own positioning.
Never underestimate the power of a motivated team.
不能察觉事情发生前所显示出的端倪的人，灾难就要降临到他身上。