那就是做第一手研究。

This is first hand research.

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现在,研究者提供一手资料可解释这个问题。

Now, researchers provide the first data that may explain the association.

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第一手来源是被认为是最可靠的研究和验证的信息来源。

In order to use primary source in our research we have to think specifically on our subject and its target.

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第一手来源是被认为是最可靠的研究和验证的信息来源。

In order to use primary source in our research we have to think specifically on our subject and its target.

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