Adding another wrinkle to 这里的wrinkle不能直译，因为原文是Adding another wrinkle to the situation，我在google上搜索还有例句比如是China May Add New Wrinkle to Microsoft-Yahoo 或 Will Twitter add a new wrinkle to campaign fundra
网友回答
Adding another wrinkle to the situation
给目前形势又平添了些许麻烦
wrinkle: 小困难,小麻烦,a minor difficulty; they finally have the wrinkles pretty well ironed out
======以下答案可供参考======
供参考答案1:
又增加了一条新皱纹
供参考答案2:
又增加了皱纹了
供参考答案3:
又在...增加(一条)皱纹 雪上加霜
wrinkle: 小困难，小麻烦
problem 的意思 很多大才啊，这里。。
供参考答案4:
雪上加霜供参考答案5:
problem 的意思
供参考答案6:
a clever method of doing something (especially something new and different)
a minor difficulty