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That suggests the need for an institutional constraint .

这说明英国需要一个制度上的约束。

Yet all these technical issues pale by comparison with the institutional barriers .

然而，所有这些技术问题在制度的壁垒下显得苍白无力。

Rich countries determined to nudge along the process of institutional development should recognise their limitations , the authors reckon .

作者认为，发达国家在决定推进由来已久的发展进程的时候应承认当中的局限性。

Some institutional interests are at stake .

这里牵涉到某些制度上的利益关系。

Yet the most difficult challenges are not institutional , but intellectual .

但最严峻的挑战并非制度上的，而是智力上的。