Paid Time Off带薪休假 Patent & Trademark Office专利与商标局 Parent-Teacher Organization (variant of Parent-Teacher Association)家长教师组织(变种家长协会) Professional and Technology Officer专业技术人员 Patent and Trademark Office专利局 Personal Time Off个人时间休息 Participating Test Organization参与试验的组织 Programming and Training Officer编程和训练军官 Ping Time Out平时间出去 Permit to Operate许可证经营 Pre-Trial Order审前订购 Payment, Treatment or Operations (protected health information can only be shared for PTO purposes)付款、治疗或操作(保护健康信息只能分享PTO用途) Presentation Text Object陈述文本对象 Please Turn Over请阅后页 Public Telephone Operator公共电话接线员