Ключевые слова: alarm, awake, background, bed, bedroom, bedside, black, business, button, clock, concepts, countdown, digit, digital, diode, display, electrical, electronic, equipment, home, hour, lateness, minute, modern, monitor, morning, night, number, object, panel, passing, red, reminder, second, sign, sleep, sleeping, stop, symbol, table, technology, time, timer, type, up, wake, waking, watch, white, work,