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Definition: an aircraft with large blades that spin on top. Examples:We flew over the island in a helicopter.A rescue helicopter was sent […]
Definition: a dangerous or serious situation where someone needs help very quickly. Examples:Use this exit only in an emergency.The passenger suffered a […]
Definition: a flat area outdoor beside a house or building, or a flat part of a hill for farming. Examples:We had breakfast […]
A path beside a street where people walk Children were walking to school on the sidewalk. Please stay on the sidewalk. It […]