The phenomenon of shrinking cities generally refers to a metropolitan area that experiences significant population loss in a short period of time.

城市收缩一般指都市区在短时间内人口大幅减少的现象。

The shrinking city phenomenon is a process of urban decline with complex causes ranging from deindustrialization, internal migration, population decline, or depletion of natural resources.

城市收缩现象是城市走向衰落的过程，其原因非常复杂，包括产业空心化、境内迁移、人口衰减或自然资源枯竭。

There are several challenges to ambitious planning in a shrinking city.

一个制定了雄心勃勃规划的收缩型城市面临着许多挑战。

来源同文世纪翻译，转载请注明出处！