1. With only a one month interim dressing, two-thirds remained coronally impermeable, i. e. 仅仅一个月的暂封，冠方已经仅有三分之二是没有微渗漏的。
2. The level to Canadian and France's is about 0. 82 hole in 11 single impermeable liner landfills. 加拿大和法国的11个单土工膜衬层的填埋场中每英亩有0。82个漏洞。
3. The membrane is impermeable to blood cells and large molecules such as proteins, but small ones can get through it. 血细胞和蛋白质等大分子无法穿透这层膜，而体积较小的物质则可以通过。
英英解释
adj.
1. preventing especially liquids to pass or diffuse through
