You have to pay on the nail before you can leave the shop with your goods.

你在带货出店前必须当场付款.

《简明英汉词典》

We have to pay on the nail before we can leave with the goods.

我们必须当场付款,才能拿走货物.

辞典例句

They always pay on the nail. They're never a day behind.

他们一向是当场付款, 一天也不拖欠.

互联网

They're good customers who always pay on the nail.

他们是好主顾,付账从不耽搁.

互联网

They always pay on the nail. They are never a day behind.

他们一向是立即付款, 一天也不拖欠.

互联网