预付50%，发货前付清余款的翻译：50% in advance, before the ship paid off the balance 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

50% advance, balance paid before shipment

50% in advance, before the ship paid off the balance

Pays in advance 50% front, delivers goods pays in full the spare money

Pre-paid 50 per cent balance paid, pre-delivery

50% in advance, before the ship paid off the balance