cross contaminated

基本解释

If the protein source was obtained elsewhere, how is it determined that it was not cross contaminated with bovine SRM from countries not of negligible BSE risk?
如果这些蛋白源来自于其它地方，那么如何确保不被来自于非疯牛病风险可忽略国家的特殊风险物质污染。
www.zwgk.suzhou.gov.cn
Cholera can spread from contaminated water and bad sanitation. This week, the Red Cross donated pumps, water-testing equipment and spare parts to the Zimbabwe National Water Authority.
霍乱可以经由受到污染的水和不良的卫生环境传播。这个星期，红十字会向津巴布韦国家水务部门捐赠了水泵、化验水的设备，以及维修配件。