求翻译：大城市的交通状况却越来越糟糕。就拿北京市来说，在很多情况下，汽车与自行车的速度越来越接近，有时候已经赶不上自行车，而自行车的速度也因为汽车的拥挤而在直线下降。是什么意思？

Large cities the traffic situation is getting worse. Beijing is, in many cases, the speed of cars and bicycles getting closer and closer, and sometimes have missed the bike, the speed of the bicycle crowded car plummeted.

Large Cities are the traffic situation is getting worse and worse. In Beijing, in many cases, automobile and bicycle speed, sometimes becoming closer to bicycle, which has not kept pace with the speed and because motor bike the cramped and dropping.

The big city transportation condition actually more and more too bad.On takes Beijing, in very many situations, the automobile and the bicycle speed is more and more close, sometimes already could not catch up with the bicycle, but but the bicycle speed also crowded dropped because of the automobile

Big city traffic conditions are getting worse. As far as Beijing, in many cases, the speed of cars and bicycles getting closer, sometimes have miss the bike, and bike speed as a result of plummeting vehicle congestion in.