They tried to cajole a callow boy to carry the caisson.

他们试图哄骗一名没有经验男孩来扛弹药。

Working conditions in these caissons were dismal and dangerous.

这些沉中作条件恶劣且危险。

They placed layers of stone on top of the caisson as they dug.

他们边挖边沉上面放上一层层石头。

This work was done in underwater chambers called " caissons."

这项作是称为“沉” 水下舱室中完成。

Anchors and winches are used  to position the caissons, which are ballasted with  water to keep them stable.

锚和绞盘定位沉，沉水压载以保持稳定。

Barr's thorough technological history discusses not only how caissons work, but also the dangers involved.

Barr 详尽技术史不仅讨论了沉作原理，还讨论了所及危险。

These caissons were used to build the bridge under the water.

这些沉水下建造桥梁。

As it turns out, working in these caissons was very dangerous.

事实证明，这些沉中作是非常危险。

But with extra troops required to do it right the caissons are not being used to limit the number of people interacting.

但由需要额外部队来执行任务，为了减少人们接触次数，目前不再使沉了。

This is probably why hundreds of people who worked on the Brooklyn Bridge eventually became sick with caisson disease.

这可能就是数百名布鲁克林大桥上作人最终患上沉病原因。

First of all, let's start with those caissons,   which will be prefabricated on land.

首先，让我们从那些沉开始，这些沉将陆地上预制。

It'll be made from concrete caissons filled  with sand.

它将由充满沙子混凝土沉制成。

Building on the rocky river bed involved the use of a largely untested technology: pneumatic caissons.

多岩石河床上建造建筑及使一种基本上未经检验技术：气动沉。

OCEANIX, which is constructing an  entire floating city in South Korea, is placing everything on platforms  made from concrete caissons.

OCEANIX 正韩国建造一座完整漂浮城市，它把所有东西都放由混凝土沉制成平台上。

At Chioggia and Malamocco different methods  were used to launch the caissons into the water.

Chioggia 和 Malamocco，使了不同方法将沉放入水中。

There are also two shoulder  caissons at all four barriers, which connect the housings to the mainland.

所有四个障碍处还有两个肩部沉，将房屋连接到大陆。

They sit in huge concrete  caissons that were prefabricated on land then dropped into trenches on the seabed.

他们坐巨大混凝土沉中，这些沉是陆地上预制，然后投入海床上战壕中。

A high concrete wall will then be built on top of the caissons to protect the island  from strong waves, wind and flooding.

然后将沉顶部建造一堵高高混凝土墙，以保护该岛免受巨浪、风和洪水侵袭。

Barges armed with huge cranes were  then used to pick up the caissons and manoeuvre them to their resting place.

配备巨型起重机驳船随后被来搬运沉并将它们运到停放处。

He describes the use of caissons, which enable workers to dig down for considerable distances, often below the water table, until they reach bedrock.

他描述了沉使， 它使人能够向下挖掘相当长距离，通常地下水位以下， 直到他们到达基岩。