自我不是坚固的事物，而是回声的集合。

The struggles I've been through, the pain I've endured, it all comes out in my music.

The mining industry is not just about digging holes in the ground; it's about unlocking the Earth's potential.

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。