英语词汇I know them by heart怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	I know them by heart
释义	know sth by heart— 滚瓜烂熟
随便看	delay of 20 minutes delay of 25 hours delay of about delay of arrival delay of days delay of delivery delay of information delay of more delay of only delay of passengers delay of payment delay of production delay of several delay of shipment delay of supply delay of the decision delay of the proceedings delay of two delay on arrival delay on release delay or cancel delay or failure delay or failure in performance delay or inability to use delay or omission

英汉双解词典包含2273206条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。

know sth by heart—