infest

1.[usupass]~ sth大量滋生；大批出没于to exist in large numbers in a particular place, often causing damage or disease

1.(指老鼠,害虫,盗贼等)大批出没,成群出现

2.在...上寄生,寄生于

1.if animals or insects infest a place, there are very many of them in it, so that they might cause damage or disease

2.to make a place or situation very unpleasant by being present in large numbers or quantities