Dragons are extremely difficult to slay, owing to the ancient magic that imbues their thick hides, which none but the most powerful spells can penetrate. "(GF)".

“龙是极难宰杀的，因为他们的厚皮里渗透着古代魔法，只有最强大的魔咒才能穿透。”(见火焰杯)。

youdao

Ancient magic in the Harry Potter universe is not magic from Before the Dawn of Time.

哈利·波特世界中古老的魔法不是开天辟地前的魔法。

youdao

The ancient Egyptians used a drawing of the eye of Horus as a magic sign to protect themselves from disease,suffering and evil.

VOA: special.2009.03.22