Ключевые слова: assistant, atom, boss, break, brown, button, chemistry, coat, coffee, collaboration, cup, danger, drawing, earth, employee, employer, environment, gray, human, information, ion, lab, layer, male, man, nature, necktie, o3, oxygen, ozone, plate, pocket, report, rest, review, scientist, shirt, sleeve, student, sun, tea, tie, water, white, whiteboard, worker,