verb🔗Share打开, 开启 To turn a switch to the "on" position in order to start or enable a device"Please switch on the light, it's getting dark in here. "请把灯打开，这里越来越黑了。electronicsdevicetechnologymachineelectricChat with AIVocabulary GamePractice Reading
verb🔗Share变脸，翻脸。 To change one's expression or appearance as if by turning a switch"When the boss entered the room, Sarah could instantly switch on a professional demeanor, hiding her earlier annoyance. "老板一进房间，莎拉立刻就能变脸，摆出一副专业的姿态，掩盖了她之前的不悦。appearanceactionmindhumanpersoncharacterChat with AIVocabulary GamePractice Reading
