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bastion; propugnaculum | |||
counter approach; defence work; defensive work; fortification; outwork | |||
earth work | |||
Defensive works | |||
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military defence works | |||
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defence (设施); defense | |||
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defence | |||
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demi-bastion |
防御工事: 17 phrases in 4 subjects |
General | 4 |
Space | 1 |
Technology | 9 |
United Nations | 3 |