通过编制全球数千次地震的地震速度图，他们还可以开始绘制地幔的温度和密度图。

By compiling a map of seismic velocities from thousands of earthquakes across the globe, they can also begin to map temperatures and densities throughout the mantle.

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通过定期的区域教育会议、大型年度会议、个别农场访问和数千次电话访问，阿姆伯尔家族传授了牧场管理的原则。

Through regular regional educational meetings, a large annual meeting, individual farm visits, and thousands of phone calls, the Amburghs pass on the principles of pasture management.

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通过定期的区域教育、大型年度会议、个人农场参观和数千次电话访问，Amburgh 家族传递着牧场管理的原则。

Through regular regional educational meetings, a large annual meeting, individual farm visits and thousands of phone calls, the Amburghs pass on the principles of pasture management.

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