复杂 + 的 + Noun
复杂 (fùzá) means "complex," "complicated," or "intricate," describing something with many interconnected parts or factors. It is a versatile adjective used in both everyday and formal Chinese. For example, 复杂的认知能力 means "complex cognitive abilities."
这道数学题太复杂了,我做不出来。
Zhè dào shùxué tí tài fùzá le, wǒ zuò bù chūlái.
This math problem is too complicated; I can't solve it.
大城市的交通情况非常复杂。
Dà chéngshì de jiāotōng qíngkuàng fēicháng fùzá.
The traffic situation in big cities is very complicated.
这件事比你想象的要复杂得多。
Zhè jiàn shì bǐ nǐ xiǎngxiàng de yào fùzá de duō.
This matter is much more complicated than you imagine.