One of the most complex and difficult to understand and build is the nuclear power plant.

对于理解和建造而言，其中一个最复杂和最困难的是核电厂。

youdao

One of the most complex and difficult to understand and build is the nuclear power plant.

对于理解和建造而言，其中一个最复杂和最困难的是核电厂。

youdao