或用质地软有弹性不透气的橡胶板遮盖在地漏上。
Or texture of soft flexible rubber airtight floor drain in the cover plate on.
而后真菌可在鞋中生长，特别是不透气的密实的鞋子。
The fungi then grow in shoes, especially tight ones without air circulation.
这一不透气的壳层(或边界层)会阻滞水分自由扩散，这种情形称为表面硬化。
This impervious layer or boundary will retard the free diffusion of moisture. This condition is referred to as case hardening.
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