我的许多祖先来自爱尔兰。

Many of my ___ancestors came from Ireland.

这项技术对我们的祖先来说就像魔法一样。

This technology would seem like magic to our ___ancestors.

我们仍然在庆祝一些对我们的祖先很重要的节日。

We still celebrate some festivals that were important to our ___ancestors.