单语范例（未经PONS编辑处理）
Curb service was introduced in the late 1920s and was mobilized in the 1940s when carhops strapped on roller skates.
en.wikipedia.org Known for its use of carhops on roller skates, the company annually hosts a competition to determine the top skating carhop in its system.
en.wikipedia.org Early restaurants built during this time offered carhop services.
en.wikipedia.org The orders are delivered to the car window by a carhop with a tray that hooks on to the car door.
en.wikipedia.org Over the decades, its iconic carhops gradually gave way to indoor counters and drive-thru windows.
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