Ability damage must be healed naturally or magically, and ability drain must be restored by magic.

属性伤害可以自然治愈或被魔法治愈，属性吸取只能被魔法治愈。

youdao

Illidan had a different proposal in mind, though: in return for the blood elves' loyalty, he would teach them to drain magic from powerful alternative sources, including demons.

伊利丹脑中却有个不同的想法：为回报血精灵的忠诚，他会教授他们从强大的其他生物，包括恶魔身上吸取魔力。

youdao

Thanks to Rommath, the blood elves on Azeroth learned how to drain arcane magic and feed their addiction.

因为罗曼斯，艾泽拉斯的血精灵也学会了通过吸取魔力来解决魔瘾。

youdao