on the double

基本解释

See where Saladin lived and check out the traces of Mongol arrowheads on the double walls.
看看萨拉丁住过的地方，再看看双层的墙上蒙古弓箭头所留下的痕迹。
This design, a variant on the double armchair style and just as lightly padded, was short-lived in France.
这种设计，双人扶手椅的变体以及少量的填充物，在法国昙花一现。
By the end of the next academic year, she had sold more poems, earned additional prizes, and written her long paper for English honors on the double personality in Dostoyevski's novels.
之后那年的年底,她卖了更多的诗,拿到了更多的奖项,还完成了关于陀思妥耶夫斯基小说中双重人格的英语文学毕业论文.

Also,there is constitutional protection against double jeopardy being put on trial twice for the same crime.
And this is the same periodic table that you're going to get in your exams, so it's good to practice doing your problem-sets with that periodic table so you're not relying on having the double check right there of seeing what the electron configuration is.
这也是你们考试时会用到的相同的表,这样你们就不会，所以使用周期表来做问题集,是很好的练习,这样你们就,不会依赖于再次确认,电子构型是什么了。
麻省理工公开课 - 化学原理课程节选
It's a little puzzle piece that says when the green flag is clicked and this is kind ; of like the beginning of a program; when you double click an icon on your desktop this is how something like that is implemented; it's listening for that double click, it's listening for that green flag.
是一小个按钮，它的意思是,何时点击绿色旗帜,这就好比开始运行程序;,当你双击桌面上的图标,就开始执行操作,桌面的图标需要双击，绿色小旗也等待点击来执行命令。
哈佛公开课 - 计算机科学课程节选

Or surely I'd about-face and on the double, But it just doesn't work anymore.
NPR: BPP Jukebox: Blues Traveler