The most amazing thing about these butterflies is that they return to the very same trees in Mexico that their great-great-grandparents used the winter before.
关于这些蝴蝶最令人惊奇的事情是，它们返回墨西哥的同一棵树，那是它们的高祖父母曾经在冬天栖居过的树。
2
My great-grandparents believed that, and my grandparents, and so do I.
曾祖父母相信，祖父母相信，我也相信。
3
She directed us to where my great-grandparents were buried amid the ruins of a 12th-century Cistercian Abbey.