2. Conclusion Positive solutions exist when the birth-rate of the predator belongs to a range. 结论当捕食者的出生率在某一范围取值时，正平衡解存在。
3. Compare the anti-predator strategies of several different species: rat, prairie dog, ground squirrel, meerkat, gazelle or other antelope or deer, and vervet monkey. 比较一些不同物种躲避掠食者的策略∶老鼠，草原犬鼠，地松鼠，海岛猫鼬，岩羚或其他羚羊或鹿和草原猴。
英英解释
n.
1. someone who attacks in search of booty
2. any animal that lives by preying on other animals
