把杯子補到滿
最字面的一支：真的有一個杯子，真的有人在倒。
noun · B1
A small amount of a drink that someone pours into your glass or cup so that it is full again, after you have already drunk some of it.
續杯；加滿
核心畫面
You can think of a glass that is half full. Nobody takes it away and nobody it. Someone simply pours in just enough to bring the level back up to the top, and that one pouring is the top-up. Two things are true in that picture and they stay true everywhere else the word goes: something was already there, and what you add is only the missing part. Change the glass into a phone account, a travel card, a loan, or an insurance policy, and the word still means the same small act of bringing the level back to where it should be.
可以想成一個喝了一半的杯子。沒有人把它拿走，也沒有人把它倒掉。有人只是再倒一些進去，把水位補回原本的高度——那一次倒…更多收起
可以想成一個喝了一半的杯子。沒有人把它拿走，也沒有人把它倒掉。有人只是再倒一些進去，把水位補回原本的高度——那一次倒的量就是 a top-up。這張圖裡有兩件事，在這個字的每一個用法裡都成立：本來就已經有一些東西在裡面，而你加進去的只是缺的那一段。把杯子換成手機帳戶、悠遊卡、一筆貸款、一張保單，這個字的意思都沒有變，還是那個「把水位補回該有的高度」的小動作。Two branches
把數字補回該有的高度
被補的東西從水變成錢。杯子裡的水位變成帳戶裡的餘額、變成一筆金額，但「只補缺的那一段」這件事完全沒變。
noun · B1
An amount of money or credit that you add to a phone, a travel card, or another account that you pay for before you use it, so that you can go on using it.
儲值（的金額）