合并症的英文：
complication

These complications may have a fatal outcome, or may lead to the development of cirrhosis
这些合并症可能会有致命后果，或可导致肝硬化。

The sceptic knows that life is complicated.
怀疑论者却深知人生是如此错综复杂、扑朔迷离。

Involved or intricate, as in structure; complicated.
复杂的在结构中牵扯较多的或错综复杂的；复杂的

There is no need to complicate matters.
没有必要使问题复杂化。

What a complicated queue!
好复杂的一张表啊！

This dance step is quite complicated.
这个舞步挺复杂的。