Before the exercise I put the vocab given into Google Translate if I don't know them. I didn't know "des jumelles" and it comes back "binoculars." Larousse also says that les jumelles are an optical instrument. However, since that made no sense, I put the whole phrase into Google Translate and it came back "the twins are twelve" -- which of course makes sense. But for a beginner it was very confusing not to find the definition of "twins" for this word I didn't know. Is it colloquial for jumelles to mean twins?
BTW, I look forward to the dictees every week. Keep them coming!