Impregnability
n. 攻不破, 不受影响
✅ 同义词
📖 牛津释义
impregnability
n[U].
🗣️ 情景例句
How has your visit to Shanghai been so far?
目前你对上海的印象如何？有何收获？
I tried to call you, but the line was busy.
我试着给你打电话，但老占线。
Were there any letters for me this morning?
今天早上有我的信吗？