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| 31. | destroyer screen |
| 驱逐舰警戒 |
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| 32. | security surveillance |
| 警戒网 |
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| 33. | screening aircraft |
| 警戒飞机 |
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| 34. | Alert Phase [ALERFA] |
| 警戒阶段 |
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| 35. | aposematic mimicry |
| 警戒拟态 |
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| 36. | alerting information |
| 警戒情报 |
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| 37. | emergency alert |
| 紧急警戒 |
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| 38. | vigilance pushbutton |
| 警戒按扣 |
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| 39. | an outpost area |
| 警戒地带 |
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| 40. | security on the move |
| 行军警戒 |
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