stumble

v.蹒跚；绊倒

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, stultification, stultify, stumbling-block, stump, stumpiness, stumpy, stun, stung, stunk, stunned, stunner, stunning, stunningly, stunt, stunt man (fem 阴性作 `stunt woman), stupefaction, stupefy, stupendous, stupendously, stupid, stupidity, stupidly,