You may want to turn off the speed control in hilly terrain if unnecessary shifting between third and fourth gear occurs. Unnecessary shifting of this type could result in reduced fuel economy.
在多坡地形行驶时，如果出现不必要的第三档和第四档之间的换档情况，而你可能还要关闭定速巡航功能，这种没有必要的切换形式会导致燃油经济性的降低。
The results indicated that grasslands were the main landscape type in plain and hilly land of Yilihe watershed.
研究结果表明：伊犁河流域内分布最多的是草地，草地是景观基质，广泛分布于流域内各种地貌类型；
This research has certain model function when extracting the basic landform type in low mountain and hilly regions.
该研究对提取我国低山丘陵区基本地貌形态类型具有一定的借鉴作用。
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