1. Many of Europe's airports are heavily congested. 欧洲许多机场都十分拥挤。
2. Furthermore, in a congested city these green spaces offer a breath of fresh air and a place to relax from the rigours of the day. 此外，在一个拥挤的城市，这些绿色空间能让我们呼吸一下新鲜的空气和有一个地方放松一天的紧张。
3. These green spaces provide people in a congested city with a breath of fresh air and a place to relax from the rigours of the day. 这些绿色空间为拥挤城市里的人们提供了呼吸新鲜空气和在紧张日子里放松的地方。
4. He promised to clear the city's congested roads. 他承诺要清理城市拥塞的道路。
5. The only bridge over the channel separating Burland from the mainland is congested, and trucks typically spend hours in traffic. 海峡上唯一连接伯兰和大陆的桥梁拥堵不堪，卡车通常要在路上堵上几个小时。
