纷繁

zhè jiàn shì yǒu jǐ diǎn ràng rén tóu xù fēn fán

这件事有几点让人头绪纷繁。

The main points in it were numerous and complicated.

chéng xù fēn fán

程序纷繁

complicated formalities

lèi bié fēn fán

类别纷繁

be of various kinds

fēn fán fù zá de guī zhāng zhì dù

纷繁复杂的规章制度

a maze of regulations