the act of two people showing their feelings for each other in a place where others can see them (the abbreviation for ‘public display of affection’) 两个人在一个其他人可以看到他们的地方互相表达自己的感受的行为(“公开表示感情”的缩写) The couple showed plenty of PDA while hanging out poolside. 这对夫妇在游泳池边闲逛时,展示了很多PDA。