求达人翻译“建造新城市的代价是摧毁旧的建筑”

翻译的方法有许多种：
1。意译：a new city is always built on an old one
we should destroy the old buildings if a new one will be built.

2. 直译：building a new city is at the expenses of/at the cost of destroying the old buildings.

building a new city is in the cost of destroying the old buildings.
3.

“建造新城市的代价是摧毁旧的建筑”可以理解为"The cost of the construction of a new city is to destroy the old buildings"

at the cost of 可以理解为“以......为代价”

The price of building a new city is to ruin the old buildings.

the price of ...is