n.复杂；并发症；纠纷

This was an unforeseen complication. 这是未预见到的复杂情况。

We cannot allow further complication of this matter. 我们不能让这件事变得更复杂了。

Pneumonia is the complication we most fear. 肺炎是我们最害怕的并发症。

I have enough complication in my life. 我生活里的麻烦已经够多了。

A further complication was his refusal to travel by air. 更麻烦的是他不肯坐飞机旅行。