| 单词 | teach your grandmother to suck eggs | 
| 释义 | teach your grandmother to suck eggs  [British] to give advice about something to someone who actually knows more about it than you do    `It's a sarcophagus. Dig it good and wide,' he said. `Go teach your grandmother to suck eggs,' said Leshka, and waved him away with a show of irritation.   Easy Learning Idioms Dictionary. Copyright © HarperCollins Publishers   | 
	
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