例句-1：My great-grandmother used to serve the most delicious meatloaf. Unfortunately, I never got the recipe from her before she passed away. If I want to make it, I'll have to fly blind. Perhaps I can figure out the ingredients and the steps involved.
例句-2：When we told our friends we were starting a dog hotel, they thought it would never work. But both us of have considerable experience running businesses. It's not like we're going to be flying blind.