1、The children ate their food in a piggish manner, without any regard for table manners.
孩子们吃饭的方式像猪一样，完全不顾忌餐桌礼仪。
2、His piggish behavior at the buffet disgusted everyone around him.
他在自助餐厅的自私行为让周围的人感到厌恶。