汉译英： 上海是一座美丽的城市，只是交通繁忙了些。

上海是一座美丽的城市，只是交通繁忙了些。
Shanghai is a beautiful city, but some areas with heavy traffic.

shanghai is a beautiful city ,but with a heavy traffic

Shanghai is a beautiful city with a crowded traffic

Shanghai is a beautiful city,which has a crowded traffic.

shanghai is a beautifual city ,which just has a crowded trffic