A zillion is a huge, made-up number. It is not a real amount you could count — it is the way people say 'so many I cannot count them, and I am not going to try'. Someone invented it about a hundred years ago by copying the sound of million, billion, and trillion, so it feels like a number even though no number is behind it.

A zillion is a huge, made-up number一個zillion是一個誇張、虛構出來的數字。It is not a real amount you could count它不是一個真的數得出來的數量 — it is the way people say 'so many I cannot count them, and I am not going to try'而是人們用來表示「多到我數不清，也懶得數」的說法。Someone invented it about a hundred years ago by copying the sound of million, billion, and trillion大概一百年前有人模仿million、billion、trillion的音造出這個字, so it feels like a number even though no number is behind it所以聽起來像數字，其實背後沒有任何確切數量。

You use it when you want to complain or be dramatic in a friendly way: 'I've told you a zillion times.' 'There were a zillion mosquitoes.' It works like a number word, so it takes 'a' or a plural: 'a zillion emails', 'zillions of stars'. Very often it appears as 'zillions of' when you don't want to name any amount at all.

You use it when you want to complain or be dramatic in a friendly way你會在想抱怨或想用友善的方式誇張表達時用它: 'I've told you a zillion times.'我跟你說過幾百萬次了。 'There were a zillion mosquitoes.'蚊子多到數不清。 It works like a number word它的用法就像一個數字詞, so it takes 'a' or a plural所以前面加a或用複數形: 'a zillion emails'多到數不清的email, 'zillions of stars'數不清的星星。Very often it appears as 'zillions of' when you don't want to name any amount at all它很常以zillions of的形式出現，用在你完全不想講出具體數量的時候。

Because it is playful slang, it belongs in conversation, in chat messages, in a funny story — not in a report where a reader expects real figures. English has several of these joke-numbers — gazillion, bazillion, squillion — and they all mean the same thing, just with more sound effects.

Because it is playful slang因為它是俏皮的俚語, it belongs in conversation, in chat messages, in a funny story適合出現在對話、聊天訊息、有趣的故事裡 — not in a report where a reader expects real figures不適合出現在讀者期待真實數字的報告裡。English has several of these joke-numbers英語裡有好幾個這種玩笑數字 — gazillion, bazillion, squillion像gazillion、bazillion、squillion — and they all mean the same thing它們意思都一樣, just with more sound effects只是聽起來更誇張、音效更多而已。