The reason for payment transfer is the release of payment bill by supplier.
问题描述：
The reason for payment transfer is the release of payment bill by supplier.
这句话是合同中一条款。我对我自己的理解不敢肯定，
答
payment transfer 是（通过银行）转账划款的意思
The reason for payment transfer is the release of payment bill by supplier.
应该翻译为- 转账付款的原因是收到供货商的付款账单