cash on arrival

例句：

1. 1.We agreed to meet at the airport and pay for our flights upon arrival.
   我们约定在机场见面，到达时支付我们的机票费用。
2. 2. The hotel provides a free breakfast service that is available upon arrival.
   酒店提供到达时免费提供的早餐服务。
3. 3. Many airlines now offer flexible payment options, including cash on arrival.
   许多航空公司现在提供灵活的支付选项，包括到达时付款。