Health systems are the stumbling block.

卫生系统是绊脚石。

youdao

The stumbling block is stepping-stone.

绊脚石乃是进身之阶。

youdao

The stumbling block lies with their conflicting views of space and time.

绊脚石正是它们对空间和时间观念的冲突。

youdao

A key stumbling block was Kirkuk. Ethnic Kurds would like to see the oil-rich city under the control of the Kurdistan Regional Government.

VOA: standard.2009.11.09

Milton's own faculty of memory - this is the idea that I'm going to be floating here - seems to provide something like, or pose a stumbling block or an obstacle for, his attempt to write an original, divinely inspired poem.

在这里我想说,弥尔顿自己的记忆系统,似乎想提供某种东西，或者想在他写出一部原创的，伟大的诗作的尝试上设置一个障碍。

耶鲁公开课 - 弥尔顿课程节选

Delegates in Spain hit a major stumbling block Tuesday when the African group pulled out of some climate talks, saying rich nations are not doing enough to tackle climate change.

VOA: standard.2009.11.04

This had been the stumbling block for China Mobile and Apple to come to an agreement.

FORBES: Analysts Misdiagnose Apple Once Again

Finding the money to pay for those changes remains the stumbling block to West Ham's bid.

BBC: Deadline set for 2012 London Olympics stadium bids

The stumbling block: Napster users are anonymous to each other and trade on a massive scale.

CNN: Napster takes the defensive