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。
To every action there is always opposed an equal reaction； or， the mutual actions of two bodies upon each other are always equal， and directed to contrary parts.
The future is always changing, but the past is always the same.
Singing is about expressing what cannot be said in words.
The lover's discourse is today of an extreme solitude.
Innovation in crop breeding must prioritize sustainability and food security.
The world is full of stories, but the stories are all one.
在黑暗中，语言是引导我们的光。
我们的收入好像我们的鞋子，如果太小就会挤脚并疼痛，如果太大则会绊脚和摔跤。