煤灰含有有毒的重金属，包括砷、镉、水银和铅，这些会从供水系统中过滤处理，在有风的时候吹到空中。
Coal ash contains toxic heavy metals, including arsenic, cadmium, mercury and lead, which leach into water systems and get blown into the air during windy days.
如同所有的电视一样，液晶显示器的塑料外壳经过溴化阻燃剂处理，内部线路用了各种有毒重金属，如镉，铬，锑，铍。
As with all TVs, LCDs have plastic shells treated with brominated flame retardants and wiring that has various toxic heavy metals such as cadmium, chromium, antimony and beryllium.
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