In the events when additional traction is required,the transfer case 4H and 4L positions can be used to lock the front and rear driveshafts together and force the front and rear wheels to rotate at the same speed. This is accmplished by simply moving the shift lever to these position. The 4H and 4L positions are intended for loose,slippery road surfaces only.Driving in the 4H and 4L positions on dry hard surfaced road may cause increased tire wear and damage to the driveline to driveline components.
參考答案:当需要额外的牵引力时，可以用变速箱的4H和4L档把前后传动轴锁在一起，使前后轮以同样的速度旋转，只需把变速杆推到这两个位置就能实现。4H和4L档只适用于松软、易滑路面，如果在干硬的路面使用4H和4L档行驶将增加轮胎磨损，并可能对动力传动系统及其组件造成损害。
（你遇到好人了，呵呵）
