Imprenable
难攻下的, 难攻破的, 难攻克的, 难攻陷的
🗣️ 情景例句
That's a brilliant idea, Richard!
这主意太棒了， Richard！
She is hard to please.
她很难取悦。
They must keep their hands behind their backs.
他们得一直将手放在背后。