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| ozone depletion | |||
| ozone diminution; ozone drop | |||
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臭氧消耗 : 47 phrases in 10 subjects |
| China | 2 |
| Earth sciences | 1 |
| Ecology | 5 |
| Electronics | 3 |
| Environment | 3 |
| Nautical | 5 |
| Oil / petroleum | 1 |
| Polymers | 1 |
| Technology | 14 |
| United Nations | 12 |
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