| 短语 | know sth backwards |
| 释义 | know sth backwards BrE， know sth backwards and forwards AmEto know something very well or perfectly对某事了如指掌，熟知某事:•She practiced her part until she knew it backwards and forwards.她反复练习自己演的角色，直到非常熟练。 |
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英语短语词组词典共收录525608条英汉双解短语词组词条，基本涵盖了全部常用短语词组的翻译及用法，是英语学习的有利工具。