water pollution
plural of action hoe
(dated, exclamation) An exclamation of surprise or shock.
contamination of water, especially surface water, by sewage effluent, fertilizer runoff, industrial chemical discharge etc.
In an unassuming manner.
肥料の流出や工場の排水による地域の水質汚染が大量の魚を死滅させ、その川を泳ぐのに適さない状態にしています。
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