Blind-sided 死角 盲区 措手不及 攻其不备Roose Bolton was blind-sided by his son who wanted him murdered.Donald Trump's opponents were blind-sided when he dug up dirt on them.Amber got blind-sided by Rob when he proposed to her on national TV.Definition: To attack someone where one is vulnerable or uninformed.Etymology: From American football where we have a blind side, which is behind us.******Up to speed 更新进展 了解最新情况等Alanna brought me up to speed on her love life.Ben brought the new guy at work up to speed.In fantasy worlds, ravens and owls bring people up to speed.Definition: Fully up-to-date on the state of someone or something.Etymology: The origin may refer to a person or animal that was performing at its best rate. The Oxford English Dictionary quotes the New York Times of 1879: "The mare was shown and her qualities and record were expatiated on. She looked decent and up to speed.******Get off high horse 放下架子 不要高高在上Dwight asked his wife to get off her high horse and talk to him.The old mean grandpa never got off his high horse and treated his servants as second-class citizens.Jerry was asked to get off his high horse when he mocked his colleagues.Definition: To become humble.Etymology: In 1380, a 'High horse' was a warhorse. In its figurative sense it is an air of superiority' that dates from 1782'.