计算机升级了大多数现有发明,使它们更用户友好。

The computer [has] upgraded most existing inventions, making them more user-friendly.

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The computer [has] upgraded most existing inventions, making them more user-friendly.

upgraded 是动词 upgrade 的过去分词形式。upgrade 由前缀 up-(表示"向上")和 grade(等级)组成,意思是"提升等级、改进"。upgraded 在这里表示"已经升级改进的"动作。

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