alas
/əˈlæs/You use alas to say that you think that the facts you are talking about are sad or unfortunate. 唉 (表示难过或不幸的惊叹声)
interjection [痛苦] int. 唉(表悲伤、遗憾、恐惧、关切等等)
Such scandals have not, alas, been absent. 唉,这样的丑闻也不是没有。