overcrowding /ˌəʊvəˈkraʊdɪŋ/

• 1. 

  N-UNCOUNT If there is a problem of overcrowding, there are more people living in a place than it was designed for. 过度拥挤

  例：

  Students were protesting at overcrowding in the dorms.

  学生们抗议宿舍里过度拥挤。