永久性

tā de shì lì shòu dào yǒng jiǔ xìng sǔn shāng

她的视力受到永久性损伤。

She has permanent damage to her eyesight.

zhè yào kě néng yǐn qǐ yǒng jiǔ xìng de nǎo bù shāng hài

这药可能引起永久性的脑部伤害。

This drug may cause permanent brain damage.