求翻译：科学家们认为狗是通过辨别人的呼吸气体中的某种极微量挥发性成分的变化获知癌症信息的，当我们的身体内部发生癌变时，这种化学成分的含量将发生变化。未来我们或许将可以通过检查患者的呼气成分来筛选癌症患者，但是目前还无法确认这一点。一名研究者幽默的说：“很不幸的是，狗狗们不能说话，没办法告诉我们它们究竟是通过哪一种生物化学技术探查到癌症的存在的！”是什么意思？

Scientists believe that the dog is a certain change of the very small amount of volatile components through the breathing gas in the identified person informed of the cancer information, when our internal body cancerous, this chemical content of the component will change. The future, perhaps we will

Scientists believe that dogs are identified by the breathing gas in a very small amount of volatile changes in the composition of the information about cancer, and when we are inside the body of a cancer, this chemical composition of the content will change. We may be able to check that the patient

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Scientists believe dogs are by distinguished people breathing gases at very low levels of some kind of change was informed of volatile components of cancer information, when we are inside the body when cancer occurs, a chemical component of content changes. We may in the future will be able to filte

正在翻译，请等待...