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| cut-in note; in-line commentary (commentary between lines of the main text) | |||
| 夹 注: 7 phrases in 6 subjects |
| Ecology | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Plastics | 2 |
| Polymers | 1 |
| Stationery | 1 |
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