stumbling block 隐藏摘要 
绊脚石
stone wall(议事中难以逾越的)障碍
stumbling block 绊脚石
summit 高级会谈
http://www.mccullers.cn/viewthread.php?action=printable&tid=172 - 基于37个网页
障碍物
stumble 绊倒
stumbling block 障碍物
stumblingly 绊倒地
http://www.mtime.com/my/ccjjy2k/blog/class_12276/ - 基于15个网页
障碍物,绊脚石
U.S., North Korea meet one-on-one
1.stumbling block: 障碍物,绊脚石
2.sideline: 副业,兼职【注】on the sideline: 作为旁观者,不参与
http://hansh.ycool.com/post.2526934.html - 基于4个网页
拦路虎
拦路虎 stumbling block
礼尚往来 Courtesy calls for reciprocity
http://hi.baidu.com/liwenwenaini/blog/item/eb12a4de70b7b15694ee371a.html - 基于2个网页
  相关词条
a stumbling block  
be a stumbling block  
obstacle; stumbling block  
turn a stumbling block into a stepping stone