Also, more importantly, the gap between US corporate sector prices and unit labor costs - a proxy for profit margins - is at 20-year highs.是什么意思_Also, more importantly, the gap between US corporate sector prices and unit labor costs - a proxy for profit margins - is at 20-year highs.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句