infrequency是什么意思？

infrequency

英[ɪn'fri:kwənsɪ] 美[ɪn'frikwənsɪ]

• n. 很少发生，罕见；

例句

• With their greater infrequency the sounds increased in strength and sharpness. 寂静的间歇逐渐变长;声音的迟延变得难以忍受.

英英词典释义

• Noun
  1. noteworthy scarcity