Arsenic is a toxic element found naturally in rocks and soil.
砷是一种自然存在于岩石和土壤中的有毒元素。
In the old days,
arsenic was used as a murder weapon in many crime novels.
在过去，砷常被用作犯罪小说中的谋杀工具。
The presence of
arsenic in the water supply poses a serious health risk to the community.
水源中含有的砷对社区居民的健康构成严重威胁。
Arsenic trioxide is used in the treatment of certain types of leukemia.
三氧化二砷用于治疗某些类型的白血病。
Prolonged exposure to low levels of
arsenic can cause skin lesions and cancer.
长期暴露于低浓度的砷可能导致皮肤病变和癌症。
Farmers were alarmed when they discovered high levels of
arsenic in their crops.
当农民发现作物中含有高浓度的砷时，他们感到震惊。
Ancient remedies sometimes contained
arsenic, which explains their deadly effects.
古代的药物有时含有砷，这解释了它们的致命效果。
Industrial waste containing
arsenic must be disposed of carefully to prevent environmental contamination.
含砷的工业废物必须妥善处理，以防止环境污染。
The use of
arsenic-based pesticides has been banned in many countries due to its harmful effects.
许多国家已禁止使用含砷农药，因为它们具有有害影响。
Detecting
arsenic in food products requires sophisticated analytical equipment.
在食品中检测砷需要精密的分析设备。
It is helping residents in Canas access sufficient water and, in Bebedero, eliminating excessive arsenic in the drinking water.
它正在帮助卡纳斯的居民获得足够的水，并在贝贝德罗消除饮用水中过量的砷。
As the third China-aided project in Costa Rica, it will help Canas residents to access sufficient water and allow people in Bebedero to eliminate excessive arsenic in their drinking water.
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