So what are the stumbling blocks?

那么，障碍是什么呢？

youdao

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”。

youdao

One of the biggest stumbling blocks to all well laid strategic plans is time and money.

对所有优良的战略计划来说最大的绊脚石就是时间和金钱。

youdao

There are plenty of stumbling-blocks, not all to do with Iraq.

ECONOMIST: The short path from faith to hatred

The challenge of "securing a cease-fire, removing armed tribesmen from urban centers, returning the military to the barracks and engaging in military-security reform will be serious stumbling blocks post-signing, " according to Longley Alley.

CNN: Yemen after Saleh: Still a treacherous road

We often know what we need to do to get where we want to go but then we run into self-imposed stumbling blocks on the way there.

FORBES: How to Overcome Obstacles and Stay on Track to Financial Success