(表示惊讶、得意)瞧,嘿an expression of surprise and, usually, pleasure, for example when something happens successfully
I was just about to borrow some money when bingo! - the cheque arrived. 我正打算去借钱时,嘿——支票到了。
I was just about to give up waiting when bingo! - he turned up. 我正要放弃,不想再等的时候,嘿,他来了。