成都现在有好几条地铁线路，还有更多正在修建中。
There are several underground lines in Chengdu, and more are under construction.
这个城市许多路段都在修建中。
新的音乐大厅正在修建中。
新的音乐大厅正在修建中。
一条新铁路正在修建中。
报导说，这家工厂的这个储存设施还在修建中。
News reports say the storage facility was still under construction.
北京有四路地下铁，还有一些线路正在修建中。
There are four underground lines in Beijing, and several lines are under construction.
新机场仍在修建中。
至少15个城市在修建地铁线，还有很多在计划兴建中。
At least 15 cities are building subway lines and a dozen more are planning them.
至少15个城市在修建地铁线，还有很多在计划兴建中。
At least 15 cities are building subway lines and a dozen more are planning them.
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