She took up boxing because she needed an outlet for her aggression.她开始练习拳击，因为她需要为自己的好斗脾性找一个发泄口。His stubbornness is not innate but acquired.他的固执脾性并非天生而是后天养成的。The dogs have excellent temperaments. 这些狗脾性很好。He has a touch of madness in his composition.他脾性有点疯狂。