complex adj.复杂的, 合成的, 综合的 n.联合体
解析:【同】complex, complicated, intricate, involved词义【辨析】

1、complex 暗示相关部分的关系;

The composer transformed a simple folk tune into a complex set of variations.
这位作曲家把一首简单的民歌小调改编成一首复杂的变奏曲.

2、complicated强调各部分之间的细微关系;

Middle Eastern politics is so complicated that even experts cannot agree on a cohesive policy.
中东政治如此复杂以致于甚至专家们也难以制定出统一的策.

3、intricate着重于各部分交织在一起很难区分或分析:如克里特岛的迷宫.

To one could soar into a more intricate labyrinth of refined phraseology.
“没有人能够攀进复杂的专业术语的优雅迷宫”（安东尼;初蒲）.

4、involved强调若是把各部分混在一起将是难以区分的:想象漩涡的形状.

The plot of the play has been criticized as being too involved.
这个剧本的情节因过于混乱而遭到了批评.