词典释义：
the quality of being made up of exactly similar parts facing each other or around an axis
对称（性）
-
this series has a line of symmetry through its centre 这个系列在中间有一条对称线
-
a crystal structure with hexagonal symmetry .六边对称的结晶体。
correct or pleasing proportion of the parts of a thing
匀称
-
an overall symmetry making the poem pleasant to the ear .使这首诗读起来十分悦耳的总体对仗。
similarity or exact correspondence between different things
（不同事物之间的）对等（或相似）
-
families where there is symmetry between husband and wife on the paid job dimension 丈夫和妻子工资水平相差无几的家庭
-
[count noun]
history sometimes exhibits weird symmetries between events .历史事件有时候表现出令人不可思议的相似性。
[count noun]
【物理，数】 对称。
"mid 16th cent. （denoting proportion）： from French
