Ключевые слова: abstract, achieve, analysis, application, background, business, cellphone, chart, concept, consult, contract, currency, desktop, double, economic, exchange, exposure, finance, financial, forex, global, growth, idea, index, info, international, invest, job, learning, letter, market, math, memo, modern, multi, opportunity, phone, purpose, rate, service, sketch, smart, statistic, stock, strategy, studying, top, trade, trend, view,