red tides

同根派生

These red tides can also cause fish kills.
這些赤潮也可能造成魚類死亡。
But Red Tide isn't the only problem.
但問題不只是赤潮。
Red Tide is usually caused by agricultural pesticides, detergents or conditions, which increase nutrients in the water.
赤潮通常是由于農(nóng)業(yè)殺蟲劑、清潔劑引起的，或是因為營養(yǎng)增大的水域狀況。
But with this type of Red Tide in Ago Bay, we unfortunately still don't know the cause.
但對于AGOBAY的赤潮類型，我們還沒有找到原因。
The result showed most of red tides in prawn ponds were polyphase.
研究結果表明:發(fā)生在該縣蝦池中的絕大多數(shù)赤潮為多相型赤潮。