研究在六十年代发现相反结果。

Research in the sixties found the opposite.

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航空磁梯度仪在六十年代中期交付使用。

The airborne magnetic gradiometer came into use in the middle 1960s.

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在六十年代晚期，一位年轻的加拿大精神病专家相信他找到了答案。

In the late 1960s, a young Canadian psychiatrist believed he had the answer.

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他们从六十年代早期就一直在布兰代斯大学共事。

They had been together at Brandeis since the early sixties.

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他们是最常见的在人在其六十年代和七十年代。

They are most common in people in their 60s and 70s.

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他们是最常见的在人在其六十年代和七十年代。

They are most common in people in their 60s and 70s.

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