The second one, the evolvement of characters is from complex to simple.

其次，汉字的演变是从繁到简。

youdao

The essence of recursion is that with the help of return, people can solve problems from unknown to known, from complex to simple.

递归的实质是借助于“回归”把未知的归结为已知的，把复杂的归结为简单的过程。

youdao

The structure forms of catalyst support for tubular fixed bed reactor underwent the evolution from complex to simple and from difficult to easy.

列管式固定床反应器催化剂支托的结构形式，经历了由繁到简、由难到易的演变。

youdao

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.

FORBES: Beyond Voice Recognition: It's The Age Of Intelligent Systems

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.

ENGADGET: CloudOn launching its iOS, Android tablet apps in 16 more countries, Office hounds rejoice

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

FORBES: Prep Your Portfolio for Disaster With a Stress Test