賓語形式是incidence,因為名詞可以直接做賓語,中文意思是n. 發生率入射
Authentic Italian cooking is very healthy—witness the low incidence of heart disease in Italy.正宗的意大利烹飪對健康非常有益,在意大利心臟病發病率低就是證據。
It sharply reduces the incidence of traffic accidents.