海沙采挖区 marine sand borrow area
艾非托式采挖 Aphetto Dredging
挖掘船采金 [矿业] gold dredging
采掘式挖泥船 digger dredger
采矿和挖掘 Mining and quarrying
采挖
"Dig"
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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煤炭其实是一种成本低廉的能源，但对它的采挖却耗资巨大。
Coal is indeed a cheap source of energy, but its extraction is extremely costly to the environment.
由于耕作技术的改变和常年采挖，半夏野生资源逐渐减少。
Owing to change of farming technic and perennial dug, the resource of escape Pinellia Tuber is decreasing.
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