合同期满一次性付清的翻译：The expiration of the contract be paid once only 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

Expiration of the contract lump sum

The expiration of the contract be paid once only

The term of contract has expired disposable pays in full

A lump sum payment upon expiration of contract

The expiration of the contract be paid once only