Students were protesting at overcrowding in the university hostels.学生在抗议大学宿舍过度拥挤。

overcrowding and lack of facilities for patients病房过度拥挤, 医疗设施不足

Target: Reduce overcrowding on London commuter routes目标：缓解伦敦通勤线路过度拥挤的情况

prison overcrowding监狱人满为患