selfn.自己;本性;自我pron.我自己;你自己;他或她自己adj.始终如一的;同一类型的;性质不变的v.近亲繁殖;自花授粉
selfcoloredadj.单色的
"a self-propelled vehicle"
"a self-propelled egotist""the arms program is now self-propelled"