bacterial pollution的用法和樣例：
例句
- Nevertheless, the risk of bacterial contamination exists with any sterile equipment that is employed in an operating room setting.
然而，不管在手術室環境內使用什麼無菌的設備，細菌污染的風險都是存在的。 - That sample did not match a B. subtilis strain found in Ivins' lab, says Bannan, but the bacterial contamination still could have come from somewhere else in Ivins' institution.
布南說，儘管樣本和在埃文斯實驗室裡面發現的枯草芽孢桿菌不匹配，但是這些細菌污染也有可能來自埃文斯所在的研究機構的其他某些地方。
