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| unstable operation | |||
| erratic operation | |||
| 不 稳定工作: 10 phrases in 8 subjects |
| Automobiles | 1 |
| Aviation | 3 |
| Drilling | 1 |
| Economy | 1 |
| Electronics | 1 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 1 |
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