sticking point

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A big sticking point will be Merkel's insistence on renegotiating the Lisbon treaty.
目前的关键在于默克尔坚持要修订里斯本条约。
The liaison between software development teams and management has always been a sticking point in IT.
软件开发团队和管理层之间的联系始终是 IT 中的一个关键所在。
Perhaps the storage locker, which provides unlimited cloud storage to users for $25 per year, is the sticking point here.
储存仓库可能是症结所在，用户只需每年交25美元就可享受无限量的云储存空间。

Another key sticking point in the debate was over Britain's relationship with Europe.
Another sticking point is pressure by the EU for Turkey to open its ports and airports to Greek Cypriot traffic, which it has so far failed to do.

Then again, the topic has been a sticking point in the campaign of late.
NPR: Obama, McCain Speak At Community Service Forum
The sticking point was Treasury's inability to carve out a special exemption for small businesses.
FORBES: Is There A Metaphysican In The House?

A sticking point in a discussion is a point on which it is not possible to reach an agreement

A sticking point in a discussion or series of negotiations is a point on which the people involved cannot agree and which may delay or stop the talks. A sticking point is also one aspect of a problem which you have trouble dealing with.

症结
Chapter 2 deeply and systematically analyzes the problem and the sticking point of channel conflict management of the enterprises in China.
第二章则对当前中国企业渠道冲突管理的问题和症结进行了深入、细致的分析。
医药科学
症结
Thus,it is hard to improve the diagnostic efficiency of S. japonicum soluble egg antigen specific antibody IgG and IgM,the sticking point of which lie in the distribution pattern of antibody level which overlaps between infections and noninfections.3.
究其原因,抗体水平的分布特征是症结所在,血吸虫感染(粪检)阳性人群和阴性人群的特异性抗体水平分布存在明显交叠。
能源科学技术
卡点