名詞 impenetrability:

1. the quality of being impenetrable (by people or light or missiles etc.)
   同義詞：imperviousness
2. incomprehensibility by virtue of being too dense to understand
   同義詞：impenetrableness

im.pen.e.tra.bil.i.ty

n.（名詞）
The quality or condition of being impenetrable.
不能貫穿：不能通過(guò)的狀態(tài)或性質(zhì)
The inability of two bodies to occupy the same space at the same time.
不可入性：兩個(gè)物體不能在同一時(shí)間占據(jù)同一個(gè)空間