Meaningful progress requires much better evidence about the cause.

要想取得有意义的进展，就需要有更多与原因相关的证据。

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It will make you more meaningful progress.

它将让你更加充实，进步。

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We have seen meaningful progress in this direction.

我们看到在这个方向取得了有意义的进展。

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We have seen meaningful progress in this direction.

我们看到在这个方向取得了有意义的进展。

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