There are new subway lines to the main Olympic sites.
到奥运会比赛场地有一些新的地铁线路。
There are new subway lines to the main Olympic sites. They are fast and cheap.
a到奥运会比赛场地有一些新的地铁线路。它们快捷便宜。
For the traffic, it is very convenient for people to travel around Beijing, because several new subway lines have been built.
对于交通，方便人们环游北京，因为一些新的地铁线路。
For the traffic, it is very convenient for people to travel around Beijing, because several new subway lines have been built.
对于交通，方便人们环游北京，因为一些新的地铁线路。
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