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环境浓度
| 极限
| 环境 CO₂浓度 | |
| agric. | ambient CO₂concentration |
| 环境浓度 | |
| ecol. | environmental concentration |
| 极限 | |
| bridg.constr. | ultimate |
| econ. | limitations |
| oil | boundary |
| sport. | red line; restriction |
| tech. | limit |
| |||
| environmental concentration | |||
| ambient concentration | |||
| |||
| ambient CO₂concentration | |||
| 环境浓度: 13 phrases in 4 subjects |
| Earth sciences | 1 |
| Ecology | 3 |
| Environment | 1 |
| Technology | 8 |
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