Step up sub-regional cooperation.

加强次区域合作。

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Sub-regional cooperation plays a critical role in implementing regional mandates.

在实施区域托管方面，次区域合作起到了关键作用。

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Connectivity therefore should be a central element in the sub-regional cooperation programmes.

因此，贯通性应该是次区域合作计划中的核心元素。

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We looked forward to U.S. support for other sub-regional cooperation frameworks in Southeast Asia.

WHITEHOUSE: Joint Statement of the 4th ASEAN-U.S. Leaders' Meeting

Specifically the UNESCO Chair is involved in developing twinning and other co-operative linking arrangements between the University of Bath and universities in sub-Saharan Africa, as well as developing sub-regional and regional cooperation networks based at the participating institutions.

UNESCO: Purpose/Objectives of the Chair/UNITWIN Network