事实
The existence of a legal system is a matter of fact, not of morality.
The concept of law is essentially a matter of social fact.
The existence of a legal system is a matter of social fact.
The rule of recognition exists as a social fact.
Science is the knowledge of consequences, and dependence of one fact upon another.
Science is the knowledge of consequences, and dependence of one fact upon another.
A picture is a fact.
The world is the totality of facts, not of things.
A picture is a fact.
A picture is a fact.
True scientific progress is achieved not by mere accumulation of facts, but by the continuous refinement of theories and models.
