| 单词 | symmetry | 
| 释义 | symmetry [`sim·ǝ´trē]  BIOLOGY The disposition of organs and other constituent parts of the body of living organisms with respect to imaginary axes.  MATHEMATICS A geometric object G has this property relative to some configuration S of its points if S determines two pieces of G which can be reflected onto each other through S.A rigid motion of a geometric figure that maps the figure onto itself.  PHYSICS See <<invariance>>  | 
	
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