The lab report confirmed that a single bacterium had contaminated the shipment of dairy products.

實驗室報告證實，單一細菌污染了這批乳製品貨物。

Our quality manager explained in the meeting how one harmful bacterium can spoil an entire batch.

我們的品管經理在會議中說明，一種有害細菌如何能毀掉整批產品。

The hotel apologized to guests after inspectors found a dangerous bacterium in the pool water.

檢查人員在泳池水中發現危險細菌後，飯店向房客致歉。