他们发现，冰川向前流动的速度比以前曾经观察到的流速更快。

They found it was marching forwards at a greater pace than a glacier had ever been observed to flow before.

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四年前，他偶然想到一个大胆的主意，乘直升飞机降落在流动的冰川上，测量其流动的速度。

Four years ago he hit upon the daring idea of landing on a moving glacier in a helicopter to measure its speed.

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此外，还讨论了锥度角对动脉血液流动的速度分布的影响问题。

In addition, the problem about effects of arterial tapered Angle on the velocity distribution of blood flow in an artery is also dis cussed.

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