通过确认所有的可恢复的动作或者向前或者后退来在数据库之间维持数据的完整性。
Integrity is maintained even across databases by making sure that all the recoverable actions either go forward or go back.
这使得迁移的代码模型与 C#转换组件保持一致，这样模型就能够参与到 UML-to-C# （向前进）和 C#-to-UML （向后退）的转换中。
This makes the migrated code model compatible with the C# transformation components, which enables the model to participate in UML-to-C# (forward) and C#-to-UML (reverse) transformations.
在询问决定的时候身体向后退——传递着惊恐和不确定的信息。脚踏实地，或者甚至可以坚定地向前踏一小步。
Stepping back when you're asking for a decision - conveys fear or uncertainty. Stand your ground, or even take a slight step forward with conviction.
如果你点击浏览器上的前进和后退按钮，浏览器就会根据你看过的页面历史向前或向后进行导航。
We click the browser's back and forward buttons and the browser navigates backward and forward through the history of pages we've seen.
点击浏览器的前进和后退按钮，浏览器就会在你的浏览历史中向前或向后导航。
Click the browser's back and forward buttons and the browser navigates backward and forward through the history of pages you've seen.
不能后退的时候，不再彷徨的时候，没有选择的时候，不能选择的时候，永远向前，因为，路一直都在。
Just move ahead when you can't turn around or you have no choose or you can't choose, because the road is always exiting before us.
828贝洛：弯下身去！（他用扇子拍打她的肩膀）。双脚向前屈！左脚向后退一步！你会倒下的。正在倒。手扶地，趴下！
828BELLO: Down! (He taps her on the shoulder with his fan) Incline feet forward! Slide left foot one pace back! You will fall. You are falling. On the hands down!
就是叫亚哈斯的日晷，向前进的日影往后退十度。
See, I will make the shade which has gone down on the steps of ahaz with the sun, go back ten steps.
我非常幸运的是我心中所有的安全感被身体抛弃，我不得不向前看，我必须向前看，没有后退的路。
I really feel…that I got lucky beacuse any sense of security pulled out from under of me. So I was forced to look forward. I had to…there was no going back.
由于她的形状，一船将继续向前迈进，通过水的活动更容易后退。
Because of her shape, a ship will move ahead through the water more easily than going astern.
由于她的形状，一船将继续向前迈进，通过水的活动更容易后退。
Because of her shape, a ship will move ahead through the water more easily than going astern.
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