The incidence of something, especially something bad such as a disease, is the frequency with which it occurs, or the occasions when it occurs. (尤指坏事的) 发生率
noun [专属名词]发生率；入射
The incidence of breast cancer increases with age. 乳腺癌的发病率随着年龄的增长而上升。
incidence
“ -ence” ⌜ 表示状态或质量的 - indicating the state or quality of ~ ⌟
