| 短语 | the citadel of sth |
| 释义 | the citadel of sth literarya place or situation in which an idea, principle, system etc that you think is important is kept safe保卫某事物的地方; 某事物有保障的地方;SYNstronghold•the last citadel of freedom自由的最后堡垒 |
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