complicated
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：
Coordinating airline traffic on the ground is as complicated as managing the traffic in the air.
协调地面的航空交通与管理空中交通一样复杂。
This puzzle is too complicated for the children.
这个智力游戏对孩子们来说太复杂了。
When coming across complicated problems, he would remain unruffled and take them calmly.
遇到复杂的问题，他总是泰然处之，沉着应付。
I will tell you, sooner or later, all the complicated process.
我迟早要把这一复杂的过程全部告诉你。
The problem became even more complicated.
问题更复杂了。
No matter how complicated the situation was, he could cope with it successfully.
不论情况多么复杂，他都能应付自如。