您要查找的是不是：
- The presence of bacteria in the blood. 菌血症血液中细菌的存在
- The presence of bacteria in urine. 菌尿症细菌在尿中的出现
- In a highly innovative approach, BCR Diagnostics in Jamestown, R.I., uses dormant forms of bacteria called spores to tip off the presence of bioweapons. 位于美国罗得岛州詹姆斯镇的BCR诊断公司（BCRDiagnostics）所用的方法极富创意，他们想利用孢子（休眠态的细菌）来侦测生物武器。
- These bacteria, however, also play a protective role.Ordinarily our tongues harbor the yeastlike Candida fungus in small numbers, the population kept in check by the presence of bacteria. 只是这些细菌也会保护我们，因为舌头通常会有少量类似酵母的念珠菌属真菌存在，它的族群数目就是靠这些细菌来控制。
- The results show that in the presence of bacteria the pyrite will be oxidized greatly, but when mixed with chalcopyrite, few pyrite is oxidized, however the oxidation of chalcopyrite is increased. 单一黄铁矿细菌浸出时， 黄铁矿会被大量氧化分解， 而当与黄铜矿混合浸出时， 黄铜矿氧化加快， 黄铁矿氧化速率降低；
- Dissolution or destruction of bacteria. 溶菌作用对细菌的溶解或破坏
- Such a growth or colony, as of bacteria. 培养菌该种生长物或群落，如培养菌
- The presence of hemoglobin in the urine. 血红蛋白尿尿液中出现血红蛋白
- He gets nervous in the presence of famous people. 他在名人面前变得局促不安。
- It shows the presence of a magnetic field. 这表明有磁场存在。
- I feel strange in the presence of strangers. 在陌生人面前，我感到不自在。
- The presence of viruses in the bloodstream. 病毒血症血液中出现病毒的症状
- We were graced with the presence of the Queen. 女王光临，我们感到不胜荣幸。
- He made the accusation in the presence of witnesses. 他在有见证人在场的情况下提出了控告。
- In the presence of elderly visitors our son was a model of decorum. 我们的儿子在来访的长辈面前彬彬有礼。
- A colony of bacteria was observed in the culture. 在培养物中发现菌群。
- The journey is enliven by the presence of these young people. 由于有这些年轻人，所以旅程充满生气。
- The singular of 'bacteria' is 'bacterium'. bacteria 的单数形式是 bacterium。
- The dogs were trained to detect the presence of explosives. 那些狗是训练来查寻爆炸物的。
- Identification of bacteria has a long history. 细菌鉴定有着悠久的历史。
