两个物体的相互作用力总是大小相等,方向相反,同时出现或消失且作用于同一直线上。
我喜欢压力。我喜欢重要时刻。我喜欢那种感觉。
Sustainability is not an option; it's the only path forward for agriculture.
You don't have to have a reason to love somebody.
The question is not whether the thing exists, but whether it has any essence which is capable of existence without us.