But isn't that isthmus only composed of quicksand?

那么，这峡只是由松动沙土形成吗？

To move goods between Asia and the Mediterranean basin, traders had to traverse the narrow isthmus separating the Red Sea and the Nile, journeying in camel-bound caravans through the unforgiving desert.

在洲和中海盆之间运输货物，商人不得不穿越分隔红海和尼罗河狭峡，骑着骆驼大篷车上穿过无情沙漠。

The very narrow isthmus of Panama presented a unique opportunity for mankind to build a shortcut by carving a Canal across just a bit more than 50 kilometers worth of land that separated the two oceans here.

巴拿马非常狭峡为人类提供了一个独特机会，通过在仅 50 多公里土上凿出一条运河来修建一条径，这条运河将这里两大洋分隔开。

Yes, last night, in a matter of minutes, we cleared that insuperable isthmus.

对，就是昨夜，几分钟内，我们便走过了这不能走过峡。

On February 6 the Nautilus cruised in sight of the city of Aden, perched on a promontory connected to the continent by a narrow isthmus, a sort of inaccessible Gibraltar whose fortifications the English rebuilt after capturing it in 1839.

2月6日，诺第留斯号浮出水面，远远看港，港筑在海呷上，一条很峡把它跟大陆连接起来。

Today,nearly 14,000 vessels travel through the isthmus annually— each in under 12 hours.

如今，每年有将近 14,000 艘船只穿越峡——每艘船只航行时间都在 12 小时以内。

I'll say, oh yeah, this person definitely has an isthmus.

我会说，哦，没错，这个人肯定有峡部。

As the isthmus was then a part of Colombia, President Roosevelt proceeded to negotiate with the government at Bogota a treaty authorizing the United States to cut a canal through its territory.

由于峡当时是哥伦比一部分，罗斯福总统着手与波哥大政府谈判一项条约， 授权美国在其领土上开辟一条运河。

For the next few months, Drake waited for news that the treasure was being brought up the Pacific coast and was making its journey across the isthmus of Panama.

在接下来几个月里，德雷克等待消息，得知财宝正在被沿着太平洋海岸运送，并穿越巴拿马峡。

The latter desert separated advanced human societies of Mesoamerica from those of North America, while the isthmus separated advanced societies of Mesoamerica from those of the Andes and Amazonia.

后者将中美洲先进人类社会与北美人类社会分开，而峡将中美洲先进社会与安第斯山脉和马逊区人类社会分开。

The idea of a water route across the isthmus, long a dream of navigators, had become a living issue after the historic voyage of the battleship Oregon around South America during the Spanish War.

横跨峡水道想法成为了航海家长期以来梦想，现在已经成为一个现实问题。

To truly connect these two bodies of water shipping interests needed a canal— a continuous maritime passage through the isthmus.

为了真正连接这两个水域， 航运需要一条运河— —一条穿过峡连续海上通道。

However, they are fragmented by geography and by ecology: the Isthmus of Panama, only 40 miles wide, virtually transects the Americas geographically, as do the isthmus's Darien rain forests and the northern Mexican desert ecologically.

然而，它们因理和生态而支离破碎：巴拿马峡只有 40 英里宽，在理上几乎横断了美洲，峡达里恩雨林和墨西哥北部沙漠在生态上也是如此。