impervious

她对他人的批评毫不在意。

She was ___impervious to others' criticism.

这种新型材料完全防水，不会被液体渗透。

This new material is completely ___impervious to liquids.

这种防水涂料能让墙壁完全不透水。

This waterproof coating makes the walls completely ___impervious to water.