green sludge 绿色淤渣 ; 绿渣 ; 绿泥 ; 绿污泥
green mature sludge 绿污泥
sludge green
污泥的绿色
以上为机器翻译结果，长、整句建议使用 人工翻译 。
"We have to get a scuba diver to clean the pool every week, " she adds, noting that a green sludge forms on the rock when it's not regularly cleaned.
WSJ: High Water Marks
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