拥塞

例句：

1. 1. The traffic was so heavy that it caused severe congestion on the highway.
   交通非常拥堵，导致高速公路上严重拥塞。
2. 2. The hospital is overwhelmed with patients due to a recent outbreak of congestion fever.
   由于近期爆发的流行性感冒，医院的病人数量已经达到饱和。
3. 3. The construction site was packed with workers due to the ongoing congestion from the nearby roadworks.
   由于附近的道路施工，工地上挤满了工人。