In addition to a set of rules, Knox Gardner got a website and declared National Soup Swap Day in January.

VOA: special.2010.11.22

swap I'm going to keep track of a little variable called swap, it's initially true, and as long as it's true, I'm going to keep going, but inside of the loop I'm going to set it to false, and only if I do a swap will I set it to true.

我打算跟踪一个小的变量称为,初始值为真，只要它是真的,算法就会继续，但是在循环里,我打算把他设为假,除非交换发生，就把它设为真。

麻省理工公开课 - 计算机科学及编程导论课程节选

Outside Kabul, too, Taliban leaders may have decided to swap set-piece battles for hit-and-run attacks.

ECONOMIST: Afghanistan: Fearful asymmetry | The

Doherty points out that pay-TV subscribers also stand to benefit from lower energy use if they can swap their set-top boxes for devices without hard drives that connect to remote storage servers.

FORBES: Magazine Article

The currency swap lines that central banks set up among themselves have also been shut down.

ECONOMIST: Tightening economic policy