Impregnability
n. 攻不破, 不受影响
✅ 同义词
📖 牛津释义
impregnability
n[U].
🗣️ 情景例句
if we can put up some collateral.
如果我们能提供担保物的话。
The war threatened his well-being.
战争威胁他的幸福。
How many players are there in a team?
一个队里有多少名队员？