adj.填補的；附加的；多余的；感嘆的
n.填充詞；感嘆詞；咒罵語
Every other word was an expletive. 每其它詞都是填充詞。
He uttered several vigorous expletives when he dropped the iron on his foot. 他的熨斗掉下砸在腳上，他隨口罵了幾聲。
虛指詞
