tautology

n.

同义反复，赘述；恒真命题；

复数：tautologies

1. To say that something is'adequate enough'is a tautology.
   说某样东西“足够够用了”就是一个同义反复。
2. To create man was a fine and original idea;but to add the sheep was a tautology.
   创造人类，是一则美好而又富于独创性的想法，但加上羔羊则未免多余。

Tautology in Evolution and Ecology
The autoimmune tautology
On the tautology of the matching law.
Individual quality: tautology or biological reality?
Theory of generalized tautology in revised Kleene system
Tautology checking using cross-controllability and cross-observability relations
Fibromyalgia syndrome, a problem of tautology.
Tautology in the Resource-Based View and the Implications of Externally Determined Resource Value: Further Comments
Illustrative visualization:new technology or useless tautology?
Common mechanisms of autoimmune diseases (the autoimmune tautology)