() if sb trying to make an agreement or a contract with sb makes a counter-offer, they suggest new conditions because they cannot accept the ones the other person has suggested 还盘（受盘人对发盘内容不同意或变更的表示）
() if a company makes a counter-offer to an employee who has been offered a job in another company, they offer better pay and conditions in order to try to keep the employee （雇主为留住员工提出的）反建议