Presidentn. 总统, 总裁, 总经理, 社长 Preserven. 蜜饯, 专供私人行猎或捕鱼的保留区 Atmospheric Pressure大气压力 Program Reporting & Evaluation System项目报告和评估制度 PrestinPrestin Program for the Retention of Engineering Students项目的工程专业学生保留 Present (abstention 'vote' or recorded show of presence, US Congress)目前的投票或(不在场,我们的记录显示国会) Posterior Reversible Encephalopathy Syndrome (hypertensive encephalopathy)可逆性后方综合症(高血压性) Pressure (meteorology)压力(气象学) Paediatric Rheumatology European Society欧洲风湿病的儿童 Posterior Reversible Encephalopathy Syndrome可逆性后方综合症