incidenceKK [ˈɪnsədəns] ｜ /ˈɪnsədəns/
GEPT 中高級
C2noun
the striking of a light beam on a surface
The incidence of sunlight through the window created a beautiful pattern on the floor.
（光線）入射；照射
C2noun
the relative frequency of occurrence of something
The incidence of car accidents increases during rush hour.
發生率；出現頻率