Public Display of Affection is so common and varied that it's earned its own acronym, the PDA.
公共場合親密行為很常見，也很多樣化。它已經擁有了自己的首字母縮略詞——PDA。

I was recently in London sharing a coffee with my uncle, who's in his 50s. When we went to leave a teenage couple was wildly embracing and kissing in the doorway in front of us. "If they really loved each other they wouldn't feel the need to do that," he muttered disapprovingly.
不久前，我和50多歲的叔叔在倫敦喝咖啡。臨走時，一對十多歲的情侶在我們前面的門口處瘋狂地擁吻?！叭绻鎼蹖Ψ剑麄兺耆珱]有必要這樣做，”叔叔不以為然地低聲說。