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| checkout operation | |||
| check operation | |||
| checked operation | |||
| 检验 操作: 18 phrases in 8 subjects |
| Agriculture | 1 |
| Automobiles | 1 |
| Aviation | 3 |
| Business | 1 |
| Electronics | 4 |
| Oil processing plants | 1 |
| Shipbuilding | 2 |
| Technology | 5 |
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