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We must build forces that are as impregnable as a rock.
我们必须建立坚如磐石的军事力量。
youdao
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A nuclear family is somehow impregnable, beyond reproach.
从某种程度来说，一个核心家庭是坚不可摧的，是无可非议的。
youdao
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A nuclear family is somehow impregnable, beyond reproach.
从某种程度来说，一个核心家庭是坚不可摧的，是无可非议的。
youdao