For parts of the past where there were no thermometers to consult, such studies use proxy data, such as tree rings.

在过去的一部分时间里，人们没有温度计测温，那些研究过程就使用具代表性的数据，比如树木的年轮来衡量。

youdao

So there were no differences between these boys and girls in ability, nor in past history of success.

所以那时男女生在能力和成功史上都没什么不同。

youdao

In the past, everyone left our village, and there were no young people here at all.

过去，人们都离开村子，村里面一个年轻人也没有。

youdao

He shook hands with Mr Gates but there were no bilateral powwows, as in past years.

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This past season there were no astronomical records broken, yet 2012 ranked as the 5th highest attended Major League Baseball season in the history of the game.

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So there were no differences between these boys and girls in ability, nor in past history of success.

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