Ключевые слова: announce, arabian, blackboard, business, chalk, chalkboard, chineese, class, communication, course, culture, discussion, education, emotional, english, female, foreign, french, german, global, greeting, heart, hello, hola, illustration, international, language, languages, learning, lesson, megaphone, multilingual, note, school, scream, spanish, speak, speaking, speech, student, study, talking, text, translation, travel, white, woman, word, worldwide, writing,