您要查找的是不是：
- The dogs were trained to detect the presence of explosives. 那些狗是训练来查寻爆炸物的。
- A smoke detector detect the presence of smoke. 烟尘探测器可探测是否存在烟雾。
- A smoke detector detects the presence of smoke . 烟尘探测器可探测是否存在烟雾。
- The dog is trained to detect the presence of explosive. 那些狗是训练来查寻爆炸物的。
- A smoke detector detects the presence of smoke. 烟尘探测器可探测是否存在烟雾。
- Humans possess no senses that can detect the presence of helium. 人类没有能够探测到氦的存在的官能。
- The dogs are trained to detect the presence of explosive. 那些狗是训练来查寻爆炸物的。
- Humans possess no senses that can detect the presence of nitrogen. 人类没有能够探测到氮的存在的官能。
- Any of a group of red dyes used as a biological stain, especially to detect the presence of RNA. 焦宁; 二苯氧芑胶染料用作生物染色剂的一组红色染料中的任一种，尤指用来探测核糖核酸的存在
- The probe is sensitive enough to detect the presence of a single microbe. 这个探针的灵敏度很高，足以测出任何微生物的存在。
- The presence of hemoglobin in the urine. 血红蛋白尿尿液中出现血红蛋白
- 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。
- The presence of bacteria in the blood. 菌血症血液中细菌的存在
- This method attempts to automatically detect the encoding of a file based on the presence of byte order marks. 此方法试图根据现存的字节顺序标记来自动检测文件的编码。
- "To be able to detect the presence of the cells by bioluminescence was really a breakthrough," says Blau. “为了能够侦测到的细胞生物是真正的突破，说：”布劳。
- 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。
- Scanning systems onboard the missile detect the presence of the beam and determine how close the missile is to the edges of it. 弹载扫描系统探测波束的存在并且确定其离波束边界的远近。
