We have a step-by-step procedure we follow." (VOICE) Gertie Walls started teaching Singapore Math to her students a couple of years ago.

VOA: standard.2010.08.10

And in terms of thinking about it for organic chemistry or if you're interested in thinking about the mechanism maybe by which it is toxic, a first step would be to draw its Lewis structure.

而为了在有机化学中思考它,或者如果你对它,有毒的机理感兴趣的话，第一步要做的应该就是画出它的路易斯结构。

麻省理工公开课 - 化学原理课程节选

Take a step way back and think about what's the basic mechanism by which cells receive signals.

现在让我们回过头来思考,细胞接收信号的基本原理

耶鲁公开课 - 生物医学工程探索课程节选

Last December in Copenhagen, the international community took a first step towards making society pay for the services provided by nature for free.

VOA: standard.2010.02.24

This was done by Shimomura that was kind of the first step in this process of having it become such a useful tool.

这个工作是由Shimomura完成的,这是它成为一个有用的,工具的过程中的第一步。

麻省理工公开课 - 化学原理课程节选

"Today,we've taken another step forward by - in leaving behind the legacy of the 20th century while building a more secure future for our children."

VOA: standard.2010.03.26

Let's take a step back and ask are all kinds of cells really the same and start by talking about two cells that I know you know are quite different.

让我们退一步并问一句,所有细胞真的都是一样的么,我们不妨从两种,看起来截然不同的细胞谈起

耶鲁公开课 - 生物医学工程探索课程节选

Britain's new cabinet agreed to cut the pay of all ministers by five percent, the first step in what is to be a major effort to cut Britain's national deficit.

VOA: standard.2010.05.13

Well let's take a step back for a minute; that's one way of looking at Biomedical Engineering, by looking at sort of the things that you know about that have been the result of the work of biomedical engineers and talk more generally.

好的,话说回来,了解生物医学工程的一种方法就是,通过看一些你们熟悉的东西,它们同时也是,生物医学工程的研究成果,并对它们做一般意义上的讲解

耶鲁公开课 - 生物医学工程探索课程节选

The visit to Damascus by U.S.envoy Mitchell is another step in what has been a cautious effort by the Obama administration to draw Syria into diplomatic engagement after years of strained relations.

VOA: standard.2009.06.09

I believe the choice should be clear." Though foreign affairs committee approval, which occurred by voice vote, is a significant step toward a vote by the full House of Representatives, the Iran Refined Petroleum Sanctions Act remains subject to consideration by two other House panels.

VOA: standard.2009.10.28

(SAYING...) "We believe that people can reset their biases by taking a proactive step, by choosing to educate themselves more about women in these fields, by putting up positive images of women in science in their classrooms and in their homes."

VOA: standard.2010.03.26

But in a press appearance here, she said the resolution of the standoff - with the reinstatement of the country's deposed Supreme Court Chief Justice Iftikhar Mohammed Chaudhry - was a resolution by the Pakistanis themselves and a hopeful first step toward broader dialogue.

VOA: standard.2009.03.16

The first step uses a bit of influenza DNA to get the patient's immune system to begin fighting off the flu, and then the protection is given a "boost" some time later by the second step, which can be either another bit of DNA or a conventional flu vaccine.

VOA: standard.2010.07.21