A lot of people are afraid of using Bitcoin; they consider it very complicated and difficult to understand.

很多人害怕使用比特币，他们觉得很复杂很难理解。

youdao

In the past, code generation for data drops was based on templates; however, the templates were quite complicated, difficult to understand, and hard to change.

过去，数据拖动的代码生成是基于模板的；然而，这些模板都十分复杂，很难理解，并且不易更改。

youdao

However, it is difficult to understand these two methods, and the solving procedure is too complicated.

但是这两种方法难以理解，而且求解过程繁琐。

youdao

We have got to succeed, but we have to understand how difficult and complicated the issues are and that we need to be patient as well.

NPR: A Conversation with Iraq Envoy Zalmay Khalilzad