"We have tried to make that airfield operate as absolutely as efficiently as possible."

VOA: standard.2010.01.21

So this just - just saying a little bit more about the sections, there's three sections, we have online discussion section sign up, has anybody tried to do that yet?

这只是对组会做更多一些的介绍,有三种组会,我们有在线讨论组会,有人曾经尝试过这个么

耶鲁公开课 - 生物医学工程探索课程节选

So as I tried to say on the board, we can have n equals 1, 1/2 but since we can't have n equals 1/2, we actually can't have a binding energy that's anywhere in between these levels that are indicated here. And that's a really important point for something that comes out of solving the Schrodinger equation is this quantization of energy levels.

我在这要说的是，我们可以让n等于，但不能让n等于,我们不能得到在这些标出来的,能级之间的结合能，能级的量子化,是从解薛定谔方程中,得到的很重要的一点。

麻省理工公开课 - 化学原理课程节选

And should that baby be born preterm, we should care for that baby by providing a package of interventions that have been shown to be tried and true and very effective."

VOA: special.2009.10.26

"The people we deal with are the people who have tried to cross the border and who have failed."

VOA: standard.2010.06.07

Jagland firmly disagrees. "If you look at the history of the Nobel Peace Prize, we have on many occasions tried to enhance what many personalities is trying to do,"

VOA: standard.2009.10.09

"In Europe and also here increasingly in the U.S., they are talking as if we had basically lost it and the main question was talking to the Taliban and settling to some degree on their terms, whereas we still have not tried - and I think it would be worth trying for a year, at least,or two - to address the causes as to why the Taliban has become relatively popular, or at least relatively accepted,"

VOA: standard.2009.03.11