复杂fù zácomplicated; complex; sophisticated; intricate:复杂的心情 mixing feelings情况复杂。

The situation is complicated.故事情节复杂。

The story is very complicated.下棋的走法不但多种多样，而且错综复杂。

The moves in chess are not only manifold, but involute.形势显得极为复杂。

The situation presents great complexity.