dead pearl 中文意思是什麼
dead pearl
解釋
無光珠-
In october, the united nations environment program declared the yangtze and pearl river estuaries dead zones. the water doesn ' t have enough oxygen in it to support fish
去年十月,聯合國環境署宣布揚子江及珠江入海口為死水區。這兩處地區水的含氧量不足以維持魚類的生存。
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