Cách sử dụng
The word "impermeable" means something that cannot be penetrated or passed through by a liquid or gas. For example, a waterproof raincoat would be considered impermeable to water because it doesn't allow any water to pass through. Another example would be a material used to make a balloon, which is impermeable to air because it doesn't allow any air to escape. So, we use the word "impermeable" when we want to describe something that doesn't allow any other substance to pass through it.