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1.The malodorous substance was found in the sewage system.
在污水处理系统中发现了这种有异味的物质。
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2.The omalopteric effect is a phenomenon that occurs when a substance absorbs light.
光吸收现象,当物质吸收光线时会发生这种现象。
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3. Omaloptera is a rare mineral found in certain areas of the world.
Omaloptera是一种稀有矿物,在某些世界上的特定地区被发现。