【解释】不孝的事有三件，其中又以没有子孙后代为最大。
科学家们似乎仍未充分理解，所有地球科学都必须为揭示地球早期状态提供证据。
Don't interfere with anything in the Constitution. That must be maintained, for it is the only safeguard of our liberties. And not to Democrats alone do I make this appeal, but to all who love these great and true principles.
