The U.S. Food and Drug Administration says that raw pet food has a high risk of bacterial contamination.

美国食品和药品管理局称，生食宠物食品有很高的细菌污染风险。

Testing water for bacterial contamination is relatively easy but still beyond the means of the poor people living in affected areas.

检测受到细菌污染的水源是不难的，但对于某些水源地受到污染又很落后的地区来说，这也是办不到的。

You keep the oyster alive as long as possible and that reduces the risk of bacterial contamination, and there is a little bit of truth to that.

让蚝保证在活的状态越长越好，因为这样可以减少细菌污染它的风险，这的确是有一定道理的。

This lab-grown or cell-based duck meat has very little threat of bacterial contamination, it's about 85 percent lower CO2 emissions associated with it.

这种实验室培育的或基于细胞的鸭肉几乎没有细菌污染的威胁，与之相关的二氧化碳排放量减少了约 85%。