| 释义 |
●have sth at your ˈfingertipsbe so familiar with a subject that you can produce any facts about it easily and quickly 对…了如指掌；精通某事◆The director was well prepared for the interview. She had all the facts at her fingertips.
经理为这次采访作了充分的准备，她对所有的事实了如指掌。 |