粒子的概念只是一个近似,在经典极限下有效。
The story is the heart of any film; without a compelling story, all the special effects in the world won't save it.
一切都是美好的,没有任何伤害。
文学是可见世界与不可见世界之间的桥梁。
Collaboration across borders is the only way to address global deforestation.