teach one's grandmother (how) to suck eggs　

“teach one's grandmother (how) to suck eggs”的中文翻译

词典解释

美音：[]

英音：[]

1. 班门弄斧

He is always telling the director how to run the business; that's like teaching his grandmother to suck eggs.

他老是对总裁说该如何管理业务,就跟班门弄斧似的。

相关词语

teach　 ones　 grandmother　 how　 to　 suck　 eggs