Many sweltered in their full racing gear—driving suits, helmets, goggles, gloves—as they waited, one at a time, for the green flag to start their laps.

许多司机在他们的全速齿轮中中暑——驾驶服、头盔、眼镜、手套——他们在等待，一次一个，等待绿色的旗帜开始他们新的一圈。

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Kurt Busch struggled to stay close during the unexpected long stretches of green-flag racing.

NPR: Kenseth Passes Busch For 1st Darlington Victory

Kyle Busch stayed on top through several stretches of green-flag racing and through the first four restarts.

NPR: Kenseth Passes Busch For 1st Darlington Victory

It's like carrying your own racing colors or flying a yacht flag for identification.

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