But the political leadership does not want that. "So a part of the strategy is building up those elements in Pakistan that understand that having a stable and peaceful relationship with Afghanistan is actually in Pakistan's national security interest,"

VOA: standard.2009.12.06

That is important, that elements, because they are the building blocks, they combine in whole number multiples.

这很主要，元素，因为它们在组成区块，它们化合成整数倍。

麻省理工公开课 - 固态化学导论课程节选

That is important, that elements, because they are the building blocks, they combine in whole number multiples.

这很主要，元素，因为它们在组成区块，它们化合成整数倍。

麻省理工公开课 - 固态化学导论课程节选