求翻译：1, according to road conditions and vehicle speed control the direction, speed gear torn off, and quickly empty the oil boom foot, high-speed gear change into low gear. In this way, the engine will be of great resistance to traction speed rapidly. In addition, for low gear, while, in combination with the hand brake, but to pay attention to the hand brake can not hold tension, we can not pull too slowly. If you pull too tight, easy to brake disc "Hugging" is likely to damage the transmission components and loss of braking ability; If you pull too fast, cause erosion and loss of brake disc wear braking effect.是什么意思？

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