古罗马时期，工程师们建造了大型的输水系统，桥梁和广阔的道路系统。

In ancient Rome, engineers built large aqueducts and Bridges and vast systems of roads.

youdao

古罗马时期，工程师们建造了大型的输水系统，桥梁和广阔的道路系统。

In ancient Rome, engineers built large aqueducts and Bridges and vast systems of roads.

youdao