 |
| |||
| security perimeter | |||
| safety clearance | |||
| margin of safety; safety margin | |||
| red line | |||
| deadline | |||
|
安全 界限 : 9 phrases in 7 subjects |
| Aviation | 1 |
| Bridge construction | 1 |
| Business | 1 |
| Electronics | 1 |
| Finances | 1 |
| Project management | 1 |
| Technology | 3 |
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