1 عمومی:: به سرعت
شبکه مترجمین ایران
1 general:: see under BEFORE YOU CAN SAY JACK ROBINSON.
American Heritage Idioms
2 general:: Phrase(s): before you know it almost immediately. • I’ll be there before you know it. • If you keep spending money like that, you’ll be broke before you know it.
McGrawhill's American Idioms And Phrasal Verbs