•complicated instructions复杂的指令

•I had to fill in this really complicated form.我必须填写这张非常复杂的表格。

•The rules are rather complicated to follow.这些规定遵守起来挺复杂的。

•The relationship is a bit complicated. He's my mother's cousin's daughter's child.关系有点复杂，他是我母亲的表姐的女儿的孩子。