Recently scientists have built artificial, embryo-like structures from stem cells.

最近，科学家们从干细胞中构建了类似胚胎的人工结构。

So what Living Seawalls is doing is bringing back these natural habitat features to an artificial structure such as a sea wall.

因此，“活海堤”所做的就是用一个人工结构重构这些自然栖息地的特征，比如海堤。

The problem in urbanized areas such as Sydney Harbor is that so much of the shoreline has been built over with artificial structures.

在悉尼港等城市化地区，问题在于很多海岸线都被人工建筑覆盖。

And these artificial structures have taken away the sort of microhabitats like rock pools, crevices, tiny holes that you would see on a natural rocky shoreline.

这些人工结构夺走了一些微栖息地，比如岩石池，裂缝和你会在天然岩石海岸线上看到的小洞。