at one's convenience
望便中告知。
Please notify me at your convenience.
请便中托人带来。
Please have it delivered at your convenience.
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。