complex

这座老城区的道路系统是一个复杂的网络。

The road system in the old city was a ___complex network.

这部电影的情节太复杂了，我跟不上。

The film's plot was so ___complex that I couldn't follow it.

修改这个实验的结果是一项非常复杂的操作。

Modifying the results of the experiment was a very ___complex operation.

这座城市为即将到来的比赛建造了一个新的体育中心。

The city built a new sports ___complex for the upcoming games.

参观任何本地购物中心都表明年轻人是最频繁的购物者。

A visit to any local shopping ___complex suggests that young adults are the most frequent shoppers.

新的住宅区包括公寓、商店和一个公园。

The new housing ___complex includes apartments, shops, and a park.