self-defensive的用法和样例：
例句
用作形容词 (adj.)
- The cute little opossum has a number of tricks up its defensive sleeve.
这种可爱的小动物自卫的本领很多。 - And why do we feel drawn together as a species, yet we steadily build up defensive barriers around our innermost feelings and beliefs so we can never be truly close to anyone?
作为同一种物种，为什么我们感觉这样亲近，而为什么我们又总是披上自卫的外衣，掩饰内心深处的情感和信念，使我们永远无法真正相互接近？
