oral contract meaning in English

口头合同
口头契约
口头协议

And i analyze the effect of incorporation clause in the special situations , such as re - charter ; the incorporation clause has some blanks ; and the effect of the incorporation clause is showed when the oral contract is incorporated into the bill of lading
并具体分析了几种特殊情况下对提单中并入条款效力的认定，这几种特殊情况是在转租船的情况下；提单并入条款存在空白时；以及口头租约并入时的租约提单并入条款的效力问题。