permeable
adj. 能透过的；有渗透性的
例句
The skin of amphibians is permeable to water.
两栖动物的皮肤是透水的。
《牛津词典》
A number of products have been developed which are permeable to air and water.
已开发出许多可渗水透气的产品。
《柯林斯英汉双解大词典》
Compared with the East, however, the West faced a greater number of external threats along more permeable frontiers.
然而，与东方相比，西方在更容易渗透的边界上面临着更多的外部威胁。
