这位拳击手是一位凶猛的打击者，他的左勾拳几乎无人能挡。

The boxer is a fierce ___smiter, and his left hook is nearly unstoppable.

在古代神话中，雷神被视为罪恶的严厉惩罚者。

In ancient myths, the thunder god was seen as a mighty ___smiter of sinners.