So an astronaut on the flight of Gemini Four, Ed White,took that first frightening step into the unknown.

VOA: special.2009.07.01

The first step in the process is when I was Deputy WHCF, that I put on the wall a big white board calendar.

程序的第一步是,当我还是办公室副主任，我在墙上安了个,白色的日历板。

普林斯顿公开课 - 国际座谈会课程节选

Now, he knows that first step ought to be like this, but he's only human, so the first step is like this, and so is the guy on the other end on that side.

他的第一步应该是这样,但由于人防卫的本能,他的第一步会变成这样,对面部队相同位置的人也会这样

耶鲁公开课 - 古希腊历史简介课程节选

US astronaut Neil Armstrong made the historic first step on the Moon from Apollo 11's landing craft called the Eagle.

VOA: standard.2009.07.16

She says the first step is to determine if Madni was on a stop-over there and if so, other legal action will be set in motion.

VOA: standard.2009.07.28

It is the first step toward an effective agreement on climate change,"

VOA: standard.2009.11.27

Astronaut Neil Armstrong, the first human to step on the Moon, observed the extraordinary accomplishment of the Apollo 11 mission forever established a lasting legacy in space flight.

VOA: standard.2009.07.16