Let's just walk through first structure here.

我们先简要讲讲第一个结构。

youdao

This week, the first structure is taking shape: a circular, 12 foot construction that will soon rise into a dome-shaped palace of earth.

本星期的第一个建筑结构正在成形，一个12英尺的圆形建筑会很快就会建起，成为一所用泥土建成的圆顶殿堂。

youdao

The success has been praised by the crystallography community, many of whom were vying with Yusupov's team to publish the first structure.

这一成果被结晶学届广为赞誉，他们中许多人是与Yusupov小组竞争，争取第一个发布结构的。

youdao

A model fort is the only structure in the park built in the exact place as the first building.

VOA: special.2009.08.17

So in terms of remaining valence electrons we have 12, so we can finish off each of our Lewis structures, so that's our first structure there, and our second structure there.

那么关于剩下的价电子，我们有十二个，因此我们可以完成这两个路易斯结构了，那么这是我们的第一个结构，而那是我们的第二个结构。

麻省理工公开课 - 化学原理课程节选

So in our first structure, we would find for the nitrogen we have a formal charge 5 minus 4 minus 2, because we're starting with 5 valence electrons, so that is a formal charge of minus 1.

那么在我们的第一个结构中，我们发现氮的形式电荷量是五减去四4,再减去二，因为我们开始有五个价电子，因此它的形式电荷量是负一。

麻省理工公开课 - 化学原理课程节选

He says the tube was remarkable at the time, because it was the first structure of its kind to be discovered.

ECONOMIST: Was the carbon nanotube overhyped?

Peru's Deputy Minister for Culture Rafael Varon said the the temple was the first structure of its kind to be found on Peru's central coast.

BBC: El Paraiso site

Gibbs concluded that while it used to be that social media was an after-thought after all other techniques were taken care of, today it is the first structure the campaign sets up.

FORBES: Obama's Gibbs on Social Media