I have chosen four models, each of which has its own specific features.

我选择了四种类型，但各有特色。

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Now Led Zeppelin has a new two-DVD set, which features excerpts of four concerts as well as interviews and TV clips.

现在齐柏林飞船乐队推出了一个新的双dvd套装，其中收录了他们四场演唱会的精华选集、访谈及电视短片。

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The list of too-late devices at CES goes on: Samsung has launched four of its own e-reading gadgets, at least one of which features a panel of buttons that emerged sleekly from the bottom of the device.

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