defensive
adj. 防御的，戒备的；生气的，发怒的；（比赛中）防守的，防御的；百般辩解的
n. 防御态势，守势；辩护，辩解
例句
Troops took up a defensive position around the town.
部队在全城采取了守势。
《牛津词典》
Green is a defensive lineman for the Atlanta Falcons.
格林是亚特兰大猎鹰球队的防守前锋队员。
《柯林斯英汉双解大词典》
Like their children, parents are often defensive about their private lives.
跟孩子们一样，家长们对他们的私生活通常也是自卫的。
