A bajillion is not a real number. It is a playful, made-up count that means a huge lot — more than you can be bothered to count. There were a bajillion mosquitoes. I have a bajillion things to do. You will hear it from children and from adults being funny; you will not see it in maths, in a contract, or in careful news. It copies the ending of million and billion and sits with other joke-numbers such as zillion and gazillion. Though actually, nobody agrees how big a bajillion is, because it was never meant to be exact. If you need a true large number, say million or billion. If you need the feeling of way too many, this word does that job.

超多、好幾兆（開玩笑的說法，不是真的數字）