他的贡献对项目的成功至关重要。

His contribution was vitally significant to the project's success.

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His contribution was vitally significant to the project's success.

vitally 是形容词 vital 的副词形式,vital 来自拉丁语 vita(生命),引申为"极其重要的、必不可少的"。副词 vitally 表示"极其重要地、关键性地",强调程度非常高。

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