We need to be careful with the idea that artistic development occurs in a straight line, from simple to complex representations.

我们需要注意这个观点，即艺术的发展是在一条直线上发生的，表现形式从简单到复杂。

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I. Learning English should follow the principle from simple to complex, from easy to difficult, and from rough to subtle.

第一、学习英语应该遵循由简入繁、由易到难、由粗至细的原则。

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In practice, one model is not always enough and a complex system may be represented by a range of models, from simple to complex.

在实践中，一个模型常常是不够的，复杂的系统可以用从简单到复杂的多个模型表示。

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The methods for shock-testing portfolios vary from simple to complex.

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CloudOn also provides Adobe Reader to view PDFs - everything from simple forms to complex 3-D documents - and a universal viewer for any file, ranging from raw Photoshop images to everyday image files, including: PNG, JPEG and GIF.

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This will allow us to transition from simple to more complex tasks that may require accessing a variety of applications and information source in a coordinated workflow.

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