In Indonesia, the batik method of dying fabric involves using wax to make complex patterns.

VOA: special.2009.11.04

I'm using it just to make the point, which you already know about; that the nervous system is complex in it performs a complex set of functions.

我想通过这张图片阐述一些,你们已经知道的知识,即神经系统是一个,功能复杂的复合体

耶鲁公开课 - 生物医学工程探索课程节选

Using his understanding of complex geometric forms, Lang has played an important role in origami's evolution.

VOA: standard.2010.03.17

Cardiologists, such as Dr.Gerard Martin, say that within the last four years, doctors have learned how to perform more complex heart surgeries using catheters."

VOA: standard.2010.01.01