impregnable fortress

基本解释

Impossible odds. An impregnable fortress. A battle like nothing you've ever seen.
睏難重重。一座堅不可摧的堡壘。一場前所未見的戰鬭。
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Within the realm of South American football, the Maracana has taken on mythical proportions and represents an almost impregnable fortress.
在南美洲的足球版圖裡麪，馬拉卡納球場頗具神奇色彩。
In addition to being an impregnable fortress for the Mexican national team, the Azteca has witnessed some of the most electrifying and immortal FIFA World Cup moments of the last 40 years.
在這座球場墨西哥隊幾乎不可戰勝，除此之外，它也見証了在過去40年世界盃歷史中的許多激動人心的永恒畫麪。貝利在這塊球場進行的1970年世界盃的決賽中，用一個完美的縯出告別了他的國家隊生涯。

The shells for the massive guns of this supposedly impregnable fortress were designed to destroy attacking ships, not massed infantry.
FORBES: The Fed Fiddles...
The shells for the guns of this supposedly impregnable fortress were designed to destroy attacking ships, not massed infantry.
FORBES: The Fed Fiddles...
He could be ruthless: his troops massacred 20, 000-25, 000 non-combatants after a four-month siege of Chitor, a nearly impregnable Hindu fortress in Rajasthan.
ECONOMIST: Millennium issue: Muslims and Hindus