n.拥挤,堵车,阻塞,充血,(人口)过剩,稠密
The congestion in the city gets even worse during the summer.
夏天城市交通阻塞尤为严重.
Energy consumption, congestion and pollution have increased.
能源消耗、交通堵塞以及污染状况愈加严重。
traffic congestion and pollution
交通拥塞和污染