Our country city of dujiangyan, Beijing the imperial palace, the three gorges dam, the huge civil engineering play an effective role.
我国的都江堰、北京故宫、三峡大坝等庞大的土木工程都发挥了卓有成效的作用。
Our country city of dujiangyan, Beijing the imperial palace, the three gorges dam, the huge civil engineering play an effective role.
我国的都江堰、北京故宫、三峡大坝等庞大的土木工程都发挥了卓有成效的作用。
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