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| накопитель сточной воды | |||
| пруд-накопитель (сточных вод) | |||
| очистной биологический пруд; очистной пруд | |||
| накопитель сточных вод | |||
| sewage pond: 5 phrases in 3 subjects |
| Construction | 1 |
| Environment | 1 |
| Natural resourses and wildlife conservation | 3 |
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