for a long, long time
他心情激动，久久不能平静。
He was so excited it was a long, long time before he could calm down.
汉译英翻译词典收录86165条汉英翻译词条，基本涵盖了全部常用中文字词的英语拼写、翻译、音标、读音、用法、例句等，是英语学习的有利工具。