Although many of the churches appear from the outside to be complex structures, they normally feature only a single story but numerous different roof levels.

虽然许多教堂从外面看起来结构很复杂，然而它们通常只有一层楼，但有许多不同层级的屋顶。

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Although many of the churches appear from the outside to be complex structures, they normally feature only a single storey but numerous different roof levels.

虽然许多教堂从外面看起来是复杂的结构，但它们通常只有一层，只是有许多不同的屋顶。

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This problem seemed to be complex in the first instance, but it could be easily solved.

这个问题乍一看似乎很复杂，但其实很容易解决。

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Or,they can be more complex such as using liquid glazes to change the color or shininess of the clay surface.

VOA: special.2009.09.09

It has to be complex, because we're asking the immune system to be able to respond to every potential foreign pathogen that we come into contact with.

免疫系统是十分复杂的,因为我们需要免疫系统,能够对我们身体接触到的,任何潜在的外来病原体进行反应

耶鲁公开课 - 生物医学工程探索课程节选

By the time you get to the end of the term, you're going to be dealing with some fairly complex things, so one of the things you're going to see is, we're going to make heavy use of libraries, or code written by others.

当你临近期末的时候，你们将要解决一些,相当复杂的难题，因此你们将会看到的其中一点是，我们要充分利用图书馆，或者别人编写的代码。

麻省理工公开课 - 计算机科学及编程导论课程节选

The charity said the reasons for this increase were hard to pinpoint, and were likely to be complex.

BBC: NSPCC launches scheme to help parents tackle neglect

"From the moment he arrived in Portugal, Bela Guttman's relationship with Benfica was destined to be complex, " says Portuguese football expert Ben Shave.

CNN: Benfica and 'the curse of Bela Guttmann'

He believes the current tax system to be complex and unfair, and he suggests replacing it with either a flat tax or a national sales tax.

FORBES: Republican - Congressman, Colorado, 6thnd district