1. Owl
predation of the "trump card" is probably flying up and quietly, so that vole disaster to befall also notice it.
猫头鹰捕食的“撒手锏”恐怕就是飞行起来无声无息，使田鼠祸到临头也毫无察觉。
2. Sludge pre-position treatment could be achieved by microorganism own metabolism and
predation between microbial population as well as improvement of process and reactors.
污泥前置处理可以通过微生物自身的新陈代谢和微生物种群之间捕食作用，以及对工艺和反应器的改良来实现污泥减量。
3. Selective
predation and prey switching can leave rarer species unpredated, This behavior can lead to the coexistence of a large number of relatively rare species in the same community.
食肉动物选择捕食和转换猎物能够使稀有物种免遭捕杀。这种行为能够导致许多相对稀少的物种在同一个群落中共存。
