1.dash off 迅速写(或画），迅速完成,迅速离开
例句：Excuse me, I must dash off now.
请原谅，我现在得赶紧走了。
2.date back (to ) 追溯到…，早在…
例句：These games date back to the time of serial consoles, mainframes, and minicomputers.
这些游戏的历史可以追溯到串行控制台、大型机和小型机时代。
3.day after day 日复一日，每天，一天又一天
例句：You see, I have been one of those fellows who live prudently and sanely, hour after hour, day after day.
你看，我已成为那些谨慎而理智生活的人们中的一员，日复一日，年复一年。
4.day and night 日日夜夜，夜以继日
例句：Working all day and night means you are nothing but your job.
日以继夜的工作意味着你除了工作一无所有。
5.day in and day out 日复一日，每天
例句：But can even the most responsible of families and carers be trusted to supervise such technology day in and day out for years on end, to stop accidents happening?
但是即使是最负责的家人和护理人员，他们能够最为信赖地一天又一天地连续监督这样的技术，来阻止事故的发生吗？
6.day off 不工作,休息
例句：If you can take the day off, do it!
如果你能离开一天，那就离开吧。