法师给冒险者施放了石肤术，让他能抵御巨龙的火焰。

The mage cast ___stoneskin on the adventurer to protect him from the dragon's fire.

这种魔法药剂能让你获得石肤效果，短时间内刀枪不入。

This magic potion gives you ___stoneskin, making you immune to physical attacks for a short time.