o Every contract is an agreement, but not every agreement is a contract. 汉语中 狭义上:合同=协议(约定) 广义上:合同内容微观;协议内容宏观。 先协议后合同 Every contract is an agreement, but not every agreement is a contract.  汉语中  狭义上：合同=协议(约定)  广义上：合同内容微观；协议内容宏观。 先协议后合同