演示版具有许多前作的优秀元素：潜行、丰富的武器和工具、以及引人入胜的剧情——让合金装备称得上伟大的因素；以及一系列崭新的元素。

The demo showcased the return of somany of the things that make MGS great -- stealth action, a widevariety of weaponry and gadgets, and riveting storytelling -- but addeda whole array of new features.

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这个改变非常重要，因为合金装备4是该系列第一款以三维潜行为设计目标的游戏。

This is important because MGS4 is the first game that's designed fortrue 3D stealth.

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