When creatures such as insects or rats infest plants or a place, they are present in large numbers and cause damage.
例句
...pests like aphids which infest cereal crops.像蚜蟲(chóng)這樣大肆侵害谷物的害蟲(chóng)
VERB
遍布于;充斥
If you say that people or things you disapprove of or regard as dangerous are infesting a place, you mean that there are large numbers of them in that place.
例句
Crime and drugs are infesting the inner cities.市中心充斥著犯罪與毒品。