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。
We are all mosaics of genetic inheritance.
"The power of a story is that it can make the unfamiliar familiar."
La soledad es la condición esencial del escritor.
There will be obstacles. There will be doubters. There will be mistakes. But with hard work, there are no limits.