And this is what it looks like today -- airstrips, radar towers, four and five-story concrete buildings.

这就是它现在的样子—飞机跑道、雷达塔、四到五层的混凝土建筑。

At one-fifth the weight of concrete, building with CLT requires smaller cranes, smaller foundations, and fewer construction workers.

CLT 的重量只有混凝土的五分之一，使用 CLT 的建筑需要用的起重机和地基比较小，需要用的建筑工人比较少。

You just live in some concrete building on some fifth floor or tenth floor and it's very cold.

只是住在混凝土建筑的5层或10层，而且非常冷。

Leaking pipes cause the same reaction in concrete buildings, and within 200 winters, most skyscrapers buckle and tumble down.

在混凝土建筑中，漏水的管道也会产生同样的变化，在200个冬天内，大多数摩天大楼都会倒塌。

In terms of the flexibility of the mud architecture, it is much more earthquake resistant than a concrete building.

就泥土建筑的灵活性而言，它比混凝土建筑的抗震能力要强得多。

So people would have to walk to safety or go to the fourth floor or higher of a reinforced concrete building.

所以人们可能必须步行到安全地方，或者到钢筋混泥土建筑的四楼或更高。”

They stayed in its concrete buildings.

他们住在它的混凝土建筑里。

Next we have non-ductile concrete buildings.

接下来我们有非延性混凝土建筑。

And little rocks do show up everywhere in the walls of the Romans' concrete buildings.

罗马混凝土建筑的墙壁上确实随处可见小石头。

Turning right through the trees, I saw a three-story concrete building.

右转穿过树林，我看到了一栋三层的混凝土建筑。

Turn right and go through another bunch of trees to a concrete building.

右转，穿过另一丛树，到达一栋混凝土建筑。

The South Korean soldiers are right behind me, and then you can see that concrete building.

韩国士兵就在我身后，然后你就可以看到那栋混凝土建筑了。

Nelson Boateng is building houses made of bricks from recycled plastics and is doing so at a fraction of the cost of concrete buildings.

纳尔逊·博阿滕正在用回收塑料制成的砖块建造房屋，而且成本只有混凝土建筑的一小部分。

432 was building 5 or 6 floors a week at one point, which is amazing for a reinforced concrete building.

432 每周一次建造 5 或 6 层楼，这对于钢筋混凝土建筑来说是惊人的。

And I remember one particular day, sitting in a windowless room, in massive concrete buildings, and talking with colleagues about how this particular wind technology, or solar, or battery technology could solve climate, if only we had enough resources.

我还记得某一天，我坐在一个没有窗户的房间里，在巨大的混凝土建筑里，和同事们谈论这种特殊的风能技术、太阳能或电池技术如何解决气候问题，前提是我们有足够的资源。