这个住宅区包括购物中心和娱乐设施在内的多个综合建筑群。

The residential area includes several ___complexes with shopping centers and recreational facilities.

他的自卑情结源于童年时期的一些创伤经历。

His inferiority ___complex stem from some traumatic experiences in childhood.

科学家发现这种铁离子复合物在催化反应中非常有效。

Scientists found that this iron ion ___complex is highly effective in catalytic reactions.