stumbling-block

n thing that causes difficulty or hesitation; obstacle 造成困难或引起疑虑的事物; 障碍物; 绊脚石: The failure to agree on manning levels is a major stumbling-block to progress in the talks. 人员配备情况未能达成协议是会谈进行中的主要障碍.

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, stumble, 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, stupor,