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Animal waste also enters water supplies.
动物粪便也会进入水中。
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Waste water may carry germs which are collected from human and animal excreta.
污水里往往有人和动物粪便中的病菌。
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Waste water may carry germs which are collected from human and animal excreta.
污水里往往有人和动物粪便中的病菌。
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