The study of truth requires a considerable effort - which is why few are willing to undertake it out of love of knowledge - despite the fact that God has implanted a natural appetite for such knowledge in the minds of men.
的确,人们中间流行着一种奇怪的观点,即房屋、山脉、河流,总之,所有感知对象,都具有超越其被理解感知之外的自然或真实存在。
塑料的真正成本不在于生产,而在于它的后续处理。