complex
单词辨析：
指各部分的内在关系复杂的。
the complex structure of the human brain
错综复杂的人脑构造
The government is an extremely complex organization.
政府是一个极其复杂的组织。
Life there is getting more complex and difficult.
那里的生活正在变得越来越复杂和艰难。
与 complex 的词义接近，但语气更强，强调因极其复杂或非常繁琐而很难理解或处理的。
This problem is too complicated for me to solve.
这道数学题太复杂了，我解不出来。
The machine is complicated in structure.
这台机器结构复杂。
The country has a very complicated voting system.
这个国家的选举制度非常复杂。
指极其复杂而难以理解的。
a convoluted explanation/speech/sentence
令人费解的阐述/讲话/句子
We don't have enough time to move through the convoluted legal system.
我们没有足够的时间走完复杂难懂的法律程序。
相关例句：
Air ducts and electrical cables were threaded through the complex structure
通风管和电缆在这幢结构复杂的建筑物中穿过。
He was an unusually complex man.
他是个极其复杂的人。
I think the amount of work will increase and that it will become ever more complex.
我想工作会越来越多，而且更加复杂。
I have never had a complex about my height.
我从来没有担心过自己的身高。
Complex family relationships interweave with a murder plot in this ambitious new novel
在这本布局恢宏的新小说中，错综复杂的家庭关系与一起谋杀阴谋交织在一起。
I knew very well that the problem was more complex than he supposed
我很清楚那个问题比他料想的要更复杂。