This means Cuba must pay the complete amount owed for the food when it is sent.

这意味着古巴必须在粮食发出后就支付清全部货款。

They have completed less than half that amount.

他们完成的还不到这个数量的一半。

The Cambridge Dictionary says the pronoun " all" can mean " every one (of), or the complete amount or number (of), or the whole (of)" .

根据剑桥词典，代词" all" 可以表示" 每一个，总量、总数，或整个。"

If you pay someone in cash, you have to report that money to the government, but you can cheat by not telling them the complete amount that you received.

如果你用现金支付某人， 你必须向政府报告这笔钱，但你可以通过不告诉他们你收到的全部金额来作弊。