The great barrier reef is the world's largest network of coral structures.

大堡礁是世界最大的珊瑚礁群。

The divers hope to restore part of Cuba's barrier reef.

潜水员希望恢复古巴的部分堡礁。

Wow, that's amazing! So there must be good diving if you talk about barrier reefs.

哇，那太不可思议了！你刚才说有珊瑚礁，那一定适合潜水。

There have been six mass bleaching events on the barrier reef, the world's largest coral reef, since 1998.

自 1998 年以来，世界上最大的珊瑚礁大堡礁已经发生了六次大规模白化事件。

He added, " Our dream is to repopulate again the parts of the barrier reef that have lost their corals."

他补充说，“我们的梦想是让失去珊瑚的堡礁重新繁衍生息。”

Once they got through the barrier reef, the Sentinelese emerged from the interior jungle and peppered their boat with arrows.

他们一穿过堡礁，森蒂纳尔人就从内陆丛林中出来，向他们的船射箭。

In a year, most survive and grow enough to repopulate part of the barrier reef between 60 to 80 meters in length, he said.

他说，在一年的时间里，大多数珊瑚碎片都可以存活下来，重新生长到60到80米长，足以成为堡礁的一部分。

Elsewhere, they take the shape of barrier reefs, such as those that exist along the coasts of New Caledonia and several of the Tuamotu Islands.

在另一处，它们形成一些礁石的悬崖，跟新喀里多尼。亚海岸和帕摩图群岛好些小岛所有的情形相仿。

Which once complete will make it the world's largest natural wonder, albeit sort of man-made, it'll be a whole three times as large as the Australian great barrier reef.

一旦完工，它将成为世界上最大的自然奇观，尽管是人造的奇观，它将是澳大利亚大堡礁的三倍大。