罗马帝国通过战争征服了许多国家。

The Roman Empire spent centuries ___conquering many nations through warfare.

经过几个月的训练，他终于克服了公开演讲的恐惧。

After months of practice, he finally succeeded in ___conquering his fear of public speaking.

这位年轻演员凭借出色的表演征服了所有评委。

The young actor's brilliant performance ___conquered all the judges.