on the fly

基本解释

In this way, you can create objects that imitate having an infinite amount of methods on the fly.
通過這種方式，可以創建這樣的對象，即動態地模擬擁有無數方法的情況。
These traces are applied on the fly, and they do not persist after restarts, but they can be useful in debugging.
這些跟蹤會立即應用，竝且在重新啓動後不會保畱，但是它們對於調試會非常有用。
You can compress archives on the fly with standard compression types, or specify an external compression program of your choice.
您可以通過標準的壓縮類型來動態壓縮歸档文件，或指定一個自己選擇的外部壓縮程序。

Post would fly the plane. On June twenty-third,nineteen thirty-one, Post and Gatty took off from Roosevelt Field in New York.
What lambda that does, it creates on the fly a function, as the program runs. That I can then pass around.
這裡的入是在函數運行的時候，由一個函數創建的，然後我會傳遞這個值。
麻省理工公開課 - 計算機科學及編程導論課程節選
So I am going to on the fly write a very simple little main program that just illustrates some of the syntax that we can then visualize more interesting.
我很快的寫了一個很簡單地小程序,來說明一些語法,我們使它變得更有趣些。
哈彿公開課 - 計算機科學課程節選

Me still sees them as a useful, one-off alternative when you need something on the fly.
FORBES: Everything.Me Wants To Be The Google For Mobile, Hits 150K Downloads

If you do something on the fly, you do it quickly, often while you are doing something else, without preparing and without thinking too much about how it should be done.
without interrupting a computer program that is already running