Time is what keeps everything from happening at once.
真实永远超越言语。
水产养殖的创新不仅仅是技术问题,更是关乎人类和地球可持续发展的思考。
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。
What you actually pay for something is at least twice the listed price because of the energy, time, money needed to set it up, learn, maintain, repair, and dispose of at the end. Not all prices appear on labels. Actual costs are 2x listed prices.