• Republicans and Democrats expressed identical concerns that by engaging in negotiations, Iran may be playing for time in an effort to move ahead with weapons-related enrichment.

    VOA: standard.2009.10.28

  • We could also figure out the formal charges, and obviously the formal charges between these two atoms, they're going to be identical, we're only dealing with oxygen atoms here.

    我们还可以把形式电荷算出来,显然这两个原子的形式电荷,应该是完全相同的,我们要处理的只有氧这一种原子。

    麻省理工公开课 - 化学原理课程节选

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