selffacedadj.天然表面的(未修整的)
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
self-contained propellant独立推进剂
self-contained fire alarm自给式火灾报警器
self-venting pouring drum有溢流塞的加料桶
self-adapt control method自适应原理
self-defensive aggression自卫性攻击