id	keyword
sc-2649	robot
sc-2649	delivery
sc-2649	design
sc-2649	human
sc-2649	user
sc-2649	unit
sc-2649	interaction
sc-2649	delivery robot
sc-2649	cities
sc-2649	figure
sc-2649	task
sc-2649	planning
sc-2649	detection
sc-2649	sensor
sc-2649	path