For example, many street corners in Paris,France show the work of an artist known as Space Invader.

VOA: special.2009.04.08

If the invader chooses the hard pass he will lose one battalion of his army simply in getting over the mountains, simply in going through the hard pass.

如果侵略者选择崎岖的路,仅在穿越阿尔卑斯山的途中,他就要损失一个营的兵力,这就是选崎岖之路的代价

耶鲁公开课 - 博弈论课程节选

So imagine the following example, an invader is thinking about invading a country, and there are two ways -- there are two passes if you like -- through which he can lead his army.

想象一下这样的例子,一个侵略者打算入侵一个国家,有两条路,想象成两个关口也行,侵略者必须通过一个才能进入

耶鲁公开课 - 博弈论课程节选

Space Invader was the name of a video game that was very popular in the nineteen eighties.

VOA: special.2009.04.08