A:What technology（技术,科技） will help with pollution control?
B:Well,for example,I've recently read an article about using certain types of bacteria（细菌） to help control some pollution problems.
A:How could that be?I thought bacteria just caused illness.
B:That's not true.Bacteriologists have identified certain strains（种族,种类） of bacteria that “eat” petroleum products,such as oil and gasoline.
A:That sounds strange.How does it work?
B:They ingest（摄取,吸收） the petroleum and excrete（排出,排泄） hydrogen and oxygen,leaving a clean environment behind them.
希望能有所帮助.