This was the moment when Neil Armstrong became the first man to step on the Moon.

正是在这一刻，内尔·阿姆斯特朗成为了登月第一人。

《柯林斯英汉双解大词典》

A step leaves an impression; in this case, it is an oft-repeated television image or a radio recording - as well as a concrete impression on the surface of the moon.

一步一个脚印。在登月这件事情上，这一步留下的印象和留在月球表面实实在在的印记，都时常在电视图像和广播录音中被提及。

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First, give the moon the same Outer Glow as in Step 12.

首先，赋予这颗月亮与步骤12中相同的外发光样式。

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It carried the man who became the first human to step on the moon, Neil Armstrong, a former X-15 pilot.

VOA: special.2010.07.07

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

Aldrin was the second man to step foot on the moon during the Apollo 11 mission in July 1969.

VOA: standard.2010.04.15

Returning to the moon is an important step for our space program.

CNN: Bush: 'It is time for America to take the next steps' in space

The moon is a logical step toward further progress and achievement.

CNN: Bush: 'It is time for America to take the next steps' in space

The next astronauts to step out onto the dusty gray surface of the moon will be wearing a suit that's very different from the bulky white armor worn by the Apollo explorers.

NPR: NASA's Future Spacesuits Are Made for Walking