For illustration purposes, our example program throughout this article is a hypotheticalcomputer game called Kill Bad Aliens. In it, you will control a spaceship.
为了便于解释，本文全篇都将使用一个示例太空游戏程序，称为Kill Bad Aliens。
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Subjects between the ages of 18 and 30 read stories containing a series of hypothetical scenarios on a computer screen.