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Use "walk-ups" in a sentence
"Safyer said coordinated care emphasizes quality and safety, and at his hospital, it means going out to visit elderly patients who live in four-story walk-ups in the Bronx, or making sure patients can get all of their care in one place."
"The main reason being that, in order to get good, you need to do literally thousands of cold walk-ups on strangers, and yes, you are going to crash and burn hundreds of times."
"One-way tickets purchased online are $20; walk-ups are $30."