Bruce went into a low gear and drove at a terrifying speed, keeping the front wheels astride the crack as he followed its zigzag course.

布鲁斯挂上慢档，把两只前轮分别搁在裂缝的两边，顺着弯弯曲曲的裂缝，以发疯的速度向前开去。

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The Finke program emphasizes "effort-based training," and he believes in keeping the effort modest (at 80 percent of the speed you could race the same distance) most of the time.

Finke的方案强调“基于努力的训练”，他认为应在大多数情况下保持最适度的努力(用80%的速度你也可以跑相同的距离)。

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In America there are calls to speed up the extension of laws prohibiting domestic airlines from keeping passengers waiting on the tarmac for more than three hours to international carriers as well.

在美国，有加速延长以下法案的呼声，即禁止国内航班将乘客滞留在飞机跑道上超过3个小时，这一规定和国际接轨。

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"Keeping everybody up to speed with what we were doing, what we were learning, what the key issues were.

VOA: standard.2010.04.29

Sales professionals need to be able to get up to speed quickly, keeping track of the network of people and business events that are relevant to closing deals.

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This speed played a role in keeping the plane in Polish government service.

ECONOMIST: European politics

Since higher vehicle speeds use more gas, keeping cars under the speed limit is good for wallets, along with being safer.

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