stud

n.种马群，畜群 a.种马的；为配种而饲养的，供配种用的 v.散步于，密布于

struggle against, struggle for, struggle to one's feet, strum, strumpet, strung, strung up, strut, strychnine, stub, stubble, stubbly, stubborn, stubbornly, stubbornness, stubby, stucco, stuccoed, stuck, stuck-up, stud-book, student, student sociologist, student-body, studied, studio, studio couch, studio flat, studious, studiously, studiousness, study, stuff, stuff up, stuff with, stuffed bird, stuffily, stuffiness, stuffing, stuffy,