abbr.每年(源自拉丁语per annum)

The P.A. system announced the boarding of flight 345 to New York.
广播系统宣布飞往纽约的345航班开始登机。
She works as a P.A. for a high-profile executive in a multinational company.
她在一家跨国公司为一位高级行政人员担任私人助理。
The teacher asked the students to turn in their P.A. forms by Friday.
老师要求学生们在星期五之前交上家长同意书。
The physician's assistant, or P.A., administered the vaccination to the patient.
医生助手（P.A.）给病人注射了疫苗。
The public address (P.A.) announcement instructed passengers to remain seated until the plane had come to a complete stop.
公共广播通知旅客飞机完全停稳后再离开座位。
The school's PTA organized a book fair as a P.A. activity.
学校的家长教师协会组织了一场图书展销会作为家长活动日(P.A.
活动)。
The musician's P.A. setup included multiple speakers and microphones for the live concert.
音乐家现场音乐会的音响设备包括多个扬声器和麦克风。
The company's P.A. stock has been steadily increasing over the past quarter.
该公司在过去一个季度内的普通股股价一直在稳步上涨。
The principal addressed the assembled parents at the P.A. meeting.
校长在家长会上向所有到会的家长们发表了讲话。
The doctor authorized his P.A. to write prescriptions for patients with minor illnesses.
医生授权他的医生助手为患有轻微疾病的患者开具处方。