But not everyone experiences the same degree of resistance from their bodies.

但不同的人，身体会遇到不同程度的阻力。

It later became apparent that rabbits were developing a degree of resistance to this disease, so that the rabbit population was unlikely to be completely exterminated.

后来，明显看出，兔子对这种疾病已产生了一定程度的免疫力，所以兔子不可能被完全消灭。