It is in complex notation and so on.

它是有复杂的记号等等。

youdao

However, this can be very tricky in practice, because the BPMN notation is really a lot richer than what BPEL supports, so a complex translation layer occurs.

然而，在实际运用中，它是非常复杂的，因为BPMN支持的符号比BPEL支持的更丰富，因此一个复杂的转换层就出现了。

youdao

The second problem is that it is very difficult to express a wide range of complex policies using this notation.

第二个问题是使用这种表示法表达许多复杂的策略非常困难。

youdao

It is in complex notation and so on.

它是有复杂的记号等等。

麻省理工公开课 - 固态化学导论课程节选

At first I thought it interesting mainly because of the technical challenges, as the relationship between print and braille is surprisingly complex and different for every language and type of notation under the sun, from Arabic to Zulu and from math to music.

WHITEHOUSE: Providing Literacy for Informed Citizenry through Braille | The White House