impregnable
🇺🇸
/ɪmˈpreɡnəbl/
🇬🇧
/ɪmˈpreɡnəbl/
adjective
R
A building or place that is so strong it cannot be broken into or captured.
The castle seemed impregnable, standing tall and strong against the storm.
城堡看起來固若金湯，高聳而堅固地抵擋著暴風雨。
R
A position, argument, or belief that is so strong it cannot be defeated or changed.
The team's strategy was so well planned that it seemed impregnable.
團隊的策略計劃得如此周密，似乎固若金湯。
translation
堅不可摧, 無懈可擊