Books based on the “Halo” series of sci-fi shooting games, for instance, have sold over 1m copies.

例如，根据科幻射击游戏“光环”（Halo）系列写成的书籍现在已经卖出100多万本。

Shooting games made their debut with “Spacewar! ”, written in 1961 by students at the Massachusetts Institute of Technology for a basic computer called the PDP-1.

首款面世的射击游戏是“太空大战”（Spacewar! ），它是1961年时麻省理工学院一群学生为基础电脑PDP-1（程控数据处理机）设计的一款游戏。

And there are shooting games where you can let out your anger and frustration in violent situations where you kill people with guns.

还有一些射击游戏，你可以在用枪杀人的暴力情况下发泄愤怒和沮丧。