“防御性”的英语？

昆虫生产的防御性化学物质,其种类之多不可胜数.There seems to be no limit to the variety of defensive chemicals produced by insects.防御性的刺长在这些讨人厌的生物背上.Defensive quills dot the backs of these troublesome creatures.现在大家偏好偏防御性的品种.It is now preferre...