(数量的)优势,普遍
a situation in which one type of person or thing within a set is the largest in number
  There is a predominance of people with an arts degree on the board of governors. 理事会中大多数人有文科学位。 
 Sprinters tend to have a predominance of fast-twitch muscle fibres.
 His paintings are characterized by a predominance of monochrome tones.
 Many seaside areas have a predominance of older residents.
 There was a predominance of males among the sickest patients.
 See also: predominance