首先，是铁制武器而不是青铜武器的使用。

First of all, iron weapons, not bronze ones.

youdao

即使是在青铜武器制作的鼎盛时期，铁制武器也开始出现。

Even at the peak of bronze weapon making, iron and steel weapon appeared. a lot of them dating from the Warring.

youdao

尽管青铜器和石器还在继续被使用，但青铜在用于制造带有锋利边缘的物件方面要成功得多，这可以应用于从锯子、镰刀到武器等任何东西。

Although copper and stone tools continued to be used, bronze was far more successful in creating sharp edges that could be used as anything from saws and scythes to weapons.

youdao