Scientists in Canada have developed a sensor that detects and raises the alarm when children or pets are left alone in a car.
원문출처 : https://www.cnn.com/2019/11/11/americas/child-pet-car-sensor-scli-intl-scn/index.html
원문출처 : https://www.cnn.com/2019/11/11/americas/child-pet-car-sensor-scli-intl-scn/index.html