blood test, blood sample, medical technology
escalator, stairs, staircase
phone, business, person
music producer, man, microphone
mercedes, daimler, automobile
camera, film, photography
windmill, sky, moon
telescope, insight, outlook
camera, slr, dslr
camera, analog, twin-lens reflex
industry, power pole, power line
drill, milling, milling machine
canon, powerglass, ipod
propellers, aircraft, detail
nuclear power plant, cooling tower, water vapor
wind power, energy, wind energy
