求翻译：采取以上措施后，发动机转速不能太快，要尽量挂高档行驶，行驶中还要注意水温表的指针位置，发现水温过高时要停车降温或补充冷却水。是什么意思？

To take these measures, the engine speed is not too fast, to try to hang the high-end travel, but also pay attention to moving water temperature table pointer position and found that the water temperature is too high to stop cooling or supplemental cooling water.

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After taking the above measures, the engine speed must not be too fast, try to hang upscale, note also that temperature in the table's pointer location, found that when the water temperature is too high to stop cooling or supplement cooling water.