extra charge

基本解释

In this way, you can pay for purchases a month later, without any extra charge.
這樣，你可以在一個月以後再支付貨款，不收任何額外的費用。
There is an extra charge of $150 if you want the weapons delivered in the south.
而且如果你需要運到南部還要付150美元的額外費用。
Why, for instance, do water users in a megacity like Lagos not pay an extra charge to get cesspits pumped out?
例如，爲何不讓像拉各斯這樣大城市的用水者交納些額外費用以資助抽糞出坑呢？

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