他们正在扩建工厂以提高产能。

They are expanding the factory to increase capacity.

党委决定了一项扩建工厂的计划.

The Party committee has settled on a plan for enlarging the factory.

许多汽车公司正在美国新建扩建工厂，这是我们几十年来闻所未闻的。

Many car companies are now building and expanding plants in the United States, something we haven't seen for decades.