double talk

详细解释:花言巧语
【法】 模棱两可的话, 含糊其词

英语解释：

名词 double talk:

deliberately unintelligible gibberish

例句：

My wife was quite convinced by what the salesman told her, but to me it was just a lot of double talk.我太太很相信推销员对她说的话，但我认为那只是花言巧语而已。