With the rise of industry came new economic tools, like steam engines, manufacturing, and mass production.

随着工业的兴起，出现了新的经济工具，如蒸汽机、制造业和大规模生产。

But to end this, on the plus side, even though they're still one of the US government's biggest defence contractors, they no longer build weapons, and it's mainly just engine manufacturing that they do in that field.

但为了结束这一切， 从好的方面来说，尽管他们仍然是美国政府最大的国防承包商之一， 但他们不再制造武器， 他们在该领域主要从事发动机制造。