清淤疏浚
- 网络Clear away silt and dredge waterways
清淤疏浚清淤疏浚
Clear away silt and dredge waterways
外事港澳 ... 加固河流堤防 Reinforce river embankment 清淤疏浚 Clear away silt and dredge waterways 隐患 Hidden dangers ...
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清淤疏浚