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| 71. | security manager |
| 保安经理 |
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| 72. | safety first engineering |
| 技术保安 |
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| 73. | Security Bureau |
| 保安局 |
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| 74. | aviation security |
| 航空保安 |
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| 75. | security control |
| 保安控制 |
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| 76. | Secretary for Security [S for S] |
| 保安局局长 |
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| 77. | security installatio |
| 保安装置 |
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| 78. | protective signaling system |
| 保安信号系统 |
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| 79. | Security Service Company |
| 保安服务公司 |
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| 80. | security command center |
| 保安指挥中心 |
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