1·One of the stumbling blocks in the Doha round, for example, was "preference erosion".
举个例子，阻碍多哈会议进程的一个绊脚石就是“优惠侵蚀”。
2·So what are the stumbling blocks?
那么，障碍是什么呢？
3·So there are two stumbling blocks.
所以目前有两个主要的障碍。
4·These are stumbling blocks to our scheme.
冠词和介词是初学英语者的绊脚石。
5·Did you have any stumbling blocks in your relationship?
你有任何的绊倒你的关系区段吗？
6·Try to find out where possible stumbling blocks may lie.
试着找出哪里可能出现绊脚石。
7·The longer the vacation we take, the bigger the stumbling blocks appear.
我们度的假期越长，我们的工作障碍就出现的越大。
8·Stumbling blocks can be stepping stones and failure can teach us so much.
绊脚石可以成为垫脚石，同样，失败也可以教会我们很多。
9·Put it all out on the table at the beginning. Talk about stumbling blocks.
一开始就要把所有问题谈清楚。
10·Articles and prepositions are stumbling blocks to the beginners of English.
冠词和介系词对英文初学者来说是个绊脚石。