The U.N.AIDS agency gives credit to better use of preventive measures.

VOA: special.2010.07.14

And we talked about the equation you can use for radial nodes last time, and that's just n minus 1 minus l.

我们讲过这个用于,计算径向节点的方程，也就是ｎ减去ｌ减去１

麻省理工公开课 - 化学原理课程节选

So let's actually just simplify this to the other version of the Rydberg constant, since we can use that here.

除以n初始的平方，我们把它简化成,另一种形式的Rydberg常数。

麻省理工公开课 - 化学原理课程节选

The heads of state at the AU's last summit had asked the U.N.Security Council to use its power to defer the Bashir indictment for one year.

VOA: standard.2009.07.06

U.N.Special Rapporteur Philip Alston questioned the legality of their use under international law.

VOA: standard.2009.10.27