complicated structure

基本解释

A windpipe, though, is a more complicated structure than skin or a bladder.
然而气管是一个比皮肤或者膀胱复杂得多的器官。
This is a bit more of a complicated structure because we have a layout inside a layout. You can see this exemplified in the image above.
从上面的这张图，你可以看出来：因为在一个排版中又有排版，所以这是一个有点复杂的结构.
''If you have got a bunch of stem cells sitting in a test tube, that is a long way from being a beautifully, anatomically organised organ like a kidney, which is quite a complicated structure.
即使你试管里有一大堆干细胞，但你离拥有一个漂亮地，结构上像肾脏一样复杂的组织器官还很远。

And nothing is more so than the most complicated structure we know of in the universe, the human brain.
FORBES: Computing Desire
Telecommunications is imploding not only because of unbalanced balance sheets but also because its immensely complicated regulatory structure, involving the federal government and 50 state regulatory agencies, was cobbled together for a pre-Internet era.
FORBES: Fact and Comment
But they've got a complicated political structure.
WHITEHOUSE: President Obama’s News Conference with Prime Minister Gillard of Australia