impenetrability

Well , in ancient Rome , impenetrability was the criterion of masculinity .

好，在古罗马时期，不可渗透性，是“雄性，男子气概”的标准。

First of all, never underestimate the impenetrability of the presidential bubble.

首先，永远不要低估总统泡沫费解。

So matter has the property of impenetrability.

所以物质具有不可穿透的特性。

Something suggestive of a dense growth of plants, as in impenetrability or thickness

错综复杂，盘根错节：使人联想到植物密集生长或不能透过的稠密的东西

Reality and impenetrability in Kant's philosophy of nature

康德自然哲学的真实与深奥