regularity

名词 regularity:

1. a property of polygons: the property of having equal sides and equal angles
   同义词：geometrical regularity
2. the quality of being characterized by a fixed principle or rate

1. Regularity ought to be observed, as regularity is very conducive to health.
   生活应遵守规律，因为规律对健康有益。
2. Lack of smoothness or regularity; unevenness.
   不平坦缺乏平衡感或规律性; 不平的
3. They meet with great regularity.
   他们定期会面。