The manager warned that shouting at clients on the phone looks common and unprofessional.

經理提醒，在電話中對客戶大吼顯得粗俗又不專業。

Some guests at the hotel gala found his loud bragging about money rather common.

飯店晚宴上有些賓客覺得他大聲炫富相當粗鄙。

Our etiquette training reminds new hires that chewing gum during interviews seems common.

我們的禮儀訓練提醒新進員工，面試時嚼口香糖顯得很沒教養。